diff --git a/examples/mapbox-vector-tiles.js b/examples/mapbox-vector-tiles.js
index c3cf5f1f5b..2f5ea4f352 100644
--- a/examples/mapbox-vector-tiles.js
+++ b/examples/mapbox-vector-tiles.js
@@ -1,4 +1,5 @@
 /* eslint-disable openlayers-internal/no-unused-requires */
+
 goog.require('ol.Map');
 goog.require('ol.View');
 goog.require('ol.format.MVT');
@@ -9,6 +10,7 @@ goog.require('ol.style.Icon');
 goog.require('ol.style.Stroke');
 goog.require('ol.style.Style');
 goog.require('ol.style.Text');
+goog.require('ol.tilegrid');
 
 
 var key = 'pk.eyJ1IjoiYWhvY2V2YXIiLCJhIjoiRk1kMWZaSSJ9.E5BkluenyWQMsBLsuByrmg';
diff --git a/examples/osm-vector-tiles.js b/examples/osm-vector-tiles.js
index bef1e300e1..db47ac2054 100644
--- a/examples/osm-vector-tiles.js
+++ b/examples/osm-vector-tiles.js
@@ -7,6 +7,7 @@ goog.require('ol.source.VectorTile');
 goog.require('ol.style.Fill');
 goog.require('ol.style.Stroke');
 goog.require('ol.style.Style');
+goog.require('ol.tilegrid');
 
 
 var format = new ol.format.TopoJSON();
diff --git a/examples/vector-esri-edit.js b/examples/vector-esri-edit.js
index 1f723ec2ea..71eae1c9db 100644
--- a/examples/vector-esri-edit.js
+++ b/examples/vector-esri-edit.js
@@ -11,6 +11,7 @@ goog.require('ol.loadingstrategy');
 goog.require('ol.proj');
 goog.require('ol.source.Vector');
 goog.require('ol.source.XYZ');
+goog.require('ol.tilegrid');
 
 
 var serviceUrl = 'http://services.arcgis.com/rOo16HdIMeOBI4Mb/arcgis/rest/' +
diff --git a/examples/vector-esri.js b/examples/vector-esri.js
index 4eb5ce0250..28a56a55fb 100644
--- a/examples/vector-esri.js
+++ b/examples/vector-esri.js
@@ -10,6 +10,7 @@ goog.require('ol.source.XYZ');
 goog.require('ol.style.Fill');
 goog.require('ol.style.Stroke');
 goog.require('ol.style.Style');
+goog.require('ol.tilegrid');
 
 
 var serviceUrl = 'http://sampleserver3.arcgisonline.com/ArcGIS/rest/services/' +
diff --git a/examples/vector-osm.js b/examples/vector-osm.js
index 5849220877..b81a1f3bf2 100644
--- a/examples/vector-osm.js
+++ b/examples/vector-osm.js
@@ -12,6 +12,7 @@ goog.require('ol.style.Circle');
 goog.require('ol.style.Fill');
 goog.require('ol.style.Stroke');
 goog.require('ol.style.Style');
+goog.require('ol.tilegrid');
 
 var styles = {
   'amenity': {
diff --git a/src/ol/attribution.js b/src/ol/attribution.js
index ffd96e29ac..2297b075f3 100644
--- a/src/ol/attribution.js
+++ b/src/ol/attribution.js
@@ -2,6 +2,7 @@ goog.provide('ol.Attribution');
 
 goog.require('ol.TileRange');
 goog.require('ol.math');
+goog.require('ol.tilegrid');
 
 
 /**
diff --git a/src/ol/source/bingmaps.js b/src/ol/source/bingmaps.js
index 7b53cc9c7f..74b0628024 100644
--- a/src/ol/source/bingmaps.js
+++ b/src/ol/source/bingmaps.js
@@ -8,6 +8,7 @@ goog.require('ol.proj');
 goog.require('ol.source.State');
 goog.require('ol.source.TileImage');
 goog.require('ol.tilecoord');
+goog.require('ol.tilegrid');
 
 
 /**
diff --git a/src/ol/source/tile.js b/src/ol/source/tile.js
index 54e43bf76b..01179cf590 100644
--- a/src/ol/source/tile.js
+++ b/src/ol/source/tile.js
@@ -1,14 +1,15 @@
 goog.provide('ol.source.Tile');
 goog.provide('ol.source.TileEvent');
 
-goog.require('ol.events.Event');
 goog.require('ol');
 goog.require('ol.TileCache');
 goog.require('ol.TileState');
+goog.require('ol.events.Event');
 goog.require('ol.proj');
 goog.require('ol.size');
 goog.require('ol.source.Source');
 goog.require('ol.tilecoord');
+goog.require('ol.tilegrid');
 
 
 /**
diff --git a/src/ol/source/tileimage.js b/src/ol/source/tileimage.js
index d5abe6337f..d9f7d72c3d 100644
--- a/src/ol/source/tileimage.js
+++ b/src/ol/source/tileimage.js
@@ -8,6 +8,7 @@ goog.require('ol.events.EventType');
 goog.require('ol.proj');
 goog.require('ol.reproj.Tile');
 goog.require('ol.source.UrlTile');
+goog.require('ol.tilegrid');
 
 
 /**
diff --git a/src/ol/source/tilejson.js b/src/ol/source/tilejson.js
index f65c5437ee..18f6fbdbca 100644
--- a/src/ol/source/tilejson.js
+++ b/src/ol/source/tilejson.js
@@ -14,6 +14,7 @@ goog.require('ol.net');
 goog.require('ol.proj');
 goog.require('ol.source.State');
 goog.require('ol.source.TileImage');
+goog.require('ol.tilegrid');
 
 
 /**
diff --git a/src/ol/source/tileutfgrid.js b/src/ol/source/tileutfgrid.js
index aba70e5ef8..c11c500345 100644
--- a/src/ol/source/tileutfgrid.js
+++ b/src/ol/source/tileutfgrid.js
@@ -12,6 +12,7 @@ goog.require('ol.net');
 goog.require('ol.proj');
 goog.require('ol.source.State');
 goog.require('ol.source.Tile');
+goog.require('ol.tilegrid');
 
 
 /**
diff --git a/src/ol/source/xyz.js b/src/ol/source/xyz.js
index 0bf11bdbcb..a0f31bddda 100644
--- a/src/ol/source/xyz.js
+++ b/src/ol/source/xyz.js
@@ -1,6 +1,7 @@
 goog.provide('ol.source.XYZ');
 
 goog.require('ol.source.TileImage');
+goog.require('ol.tilegrid');
 
 
 /**
diff --git a/src/ol/tilecoord.js b/src/ol/tilecoord.js
index 60da04b7ec..913f93f697 100644
--- a/src/ol/tilecoord.js
+++ b/src/ol/tilecoord.js
@@ -1,6 +1,7 @@
 goog.provide('ol.tilecoord');
 
 goog.require('ol.extent');
+goog.require('ol.tilegrid');
 
 
 /**
diff --git a/src/ol/tilegrid/index.js b/src/ol/tilegrid/index.js
new file mode 100644
index 0000000000..5c8f50ab73
--- /dev/null
+++ b/src/ol/tilegrid/index.js
@@ -0,0 +1,133 @@
+goog.provide('ol.tilegrid');
+
+goog.require('ol.extent.Corner');
+goog.require('ol.obj');
+goog.require('ol.proj');
+goog.require('ol.proj.METERS_PER_UNIT');
+goog.require('ol.proj.Units');
+goog.require('ol.tilegrid.TileGrid');
+
+
+/**
+ * @param {ol.proj.Projection} projection Projection.
+ * @return {!ol.tilegrid.TileGrid} Default tile grid for the passed projection.
+ */
+ol.tilegrid.getForProjection = function(projection) {
+  var tileGrid = projection.getDefaultTileGrid();
+  if (!tileGrid) {
+    tileGrid = ol.tilegrid.createForProjection(projection);
+    projection.setDefaultTileGrid(tileGrid);
+  }
+  return tileGrid;
+};
+
+
+/**
+ * @param {ol.Extent} extent Extent.
+ * @param {number=} opt_maxZoom Maximum zoom level (default is
+ *     ol.DEFAULT_MAX_ZOOM).
+ * @param {number|ol.Size=} opt_tileSize Tile size (default uses
+ *     ol.DEFAULT_TILE_SIZE).
+ * @param {ol.extent.Corner=} opt_corner Extent corner (default is
+ *     ol.extent.Corner.TOP_LEFT).
+ * @return {!ol.tilegrid.TileGrid} TileGrid instance.
+ */
+ol.tilegrid.createForExtent = function(extent, opt_maxZoom, opt_tileSize, opt_corner) {
+  var corner = opt_corner !== undefined ?
+      opt_corner : ol.extent.Corner.TOP_LEFT;
+
+  var resolutions = ol.tilegrid.resolutionsFromExtent(
+      extent, opt_maxZoom, opt_tileSize);
+
+  return new ol.tilegrid.TileGrid({
+    extent: extent,
+    origin: ol.extent.getCorner(extent, corner),
+    resolutions: resolutions,
+    tileSize: opt_tileSize
+  });
+};
+
+
+/**
+ * Creates a tile grid with a standard XYZ tiling scheme.
+ * @param {olx.tilegrid.XYZOptions=} opt_options Tile grid options.
+ * @return {ol.tilegrid.TileGrid} Tile grid instance.
+ * @api
+ */
+ol.tilegrid.createXYZ = function(opt_options) {
+  var options = /** @type {olx.tilegrid.TileGridOptions} */ ({});
+  ol.obj.assign(options, opt_options !== undefined ?
+      opt_options : /** @type {olx.tilegrid.XYZOptions} */ ({}));
+  if (options.extent === undefined) {
+    options.extent = ol.proj.get('EPSG:3857').getExtent();
+  }
+  options.resolutions = ol.tilegrid.resolutionsFromExtent(
+      options.extent, options.maxZoom, options.tileSize);
+  delete options.maxZoom;
+
+  return new ol.tilegrid.TileGrid(options);
+};
+
+
+/**
+ * Create a resolutions array from an extent.  A zoom factor of 2 is assumed.
+ * @param {ol.Extent} extent Extent.
+ * @param {number=} opt_maxZoom Maximum zoom level (default is
+ *     ol.DEFAULT_MAX_ZOOM).
+ * @param {number|ol.Size=} opt_tileSize Tile size (default uses
+ *     ol.DEFAULT_TILE_SIZE).
+ * @return {!Array.<number>} Resolutions array.
+ */
+ol.tilegrid.resolutionsFromExtent = function(extent, opt_maxZoom, opt_tileSize) {
+  var maxZoom = opt_maxZoom !== undefined ?
+      opt_maxZoom : ol.DEFAULT_MAX_ZOOM;
+
+  var height = ol.extent.getHeight(extent);
+  var width = ol.extent.getWidth(extent);
+
+  var tileSize = ol.size.toSize(opt_tileSize !== undefined ?
+      opt_tileSize : ol.DEFAULT_TILE_SIZE);
+  var maxResolution = Math.max(
+      width / tileSize[0], height / tileSize[1]);
+
+  var length = maxZoom + 1;
+  var resolutions = new Array(length);
+  for (var z = 0; z < length; ++z) {
+    resolutions[z] = maxResolution / Math.pow(2, z);
+  }
+  return resolutions;
+};
+
+
+/**
+ * @param {ol.ProjectionLike} projection Projection.
+ * @param {number=} opt_maxZoom Maximum zoom level (default is
+ *     ol.DEFAULT_MAX_ZOOM).
+ * @param {ol.Size=} opt_tileSize Tile size (default uses ol.DEFAULT_TILE_SIZE).
+ * @param {ol.extent.Corner=} opt_corner Extent corner (default is
+ *     ol.extent.Corner.BOTTOM_LEFT).
+ * @return {!ol.tilegrid.TileGrid} TileGrid instance.
+ */
+ol.tilegrid.createForProjection = function(projection, opt_maxZoom, opt_tileSize, opt_corner) {
+  var extent = ol.tilegrid.extentFromProjection(projection);
+  return ol.tilegrid.createForExtent(
+      extent, opt_maxZoom, opt_tileSize, opt_corner);
+};
+
+
+/**
+ * Generate a tile grid extent from a projection.  If the projection has an
+ * extent, it is used.  If not, a global extent is assumed.
+ * @param {ol.ProjectionLike} projection Projection.
+ * @return {ol.Extent} Extent.
+ */
+ol.tilegrid.extentFromProjection = function(projection) {
+  projection = ol.proj.get(projection);
+  var extent = projection.getExtent();
+  if (!extent) {
+    var half = 180 * ol.proj.METERS_PER_UNIT[ol.proj.Units.DEGREES] /
+        projection.getMetersPerUnit();
+    extent = ol.extent.createOrUpdate(-half, -half, half, half);
+  }
+  return extent;
+};
diff --git a/src/ol/tilegrid.jsdoc b/src/ol/tilegrid/index.jsdoc
similarity index 100%
rename from src/ol/tilegrid.jsdoc
rename to src/ol/tilegrid/index.jsdoc
diff --git a/src/ol/tilegrid/tilegrid.js b/src/ol/tilegrid/tilegrid.js
index 033031f166..9971bdbdd3 100644
--- a/src/ol/tilegrid/tilegrid.js
+++ b/src/ol/tilegrid/tilegrid.js
@@ -4,12 +4,7 @@ goog.require('ol');
 goog.require('ol.TileRange');
 goog.require('ol.array');
 goog.require('ol.extent');
-goog.require('ol.extent.Corner');
 goog.require('ol.math');
-goog.require('ol.obj');
-goog.require('ol.proj');
-goog.require('ol.proj.METERS_PER_UNIT');
-goog.require('ol.proj.Units');
 goog.require('ol.size');
 goog.require('ol.tilecoord');
 
@@ -507,128 +502,3 @@ ol.tilegrid.TileGrid.prototype.calculateTileRanges_ = function(extent) {
   }
   this.fullTileRanges_ = fullTileRanges;
 };
-
-
-/**
- * @param {ol.proj.Projection} projection Projection.
- * @return {!ol.tilegrid.TileGrid} Default tile grid for the passed projection.
- */
-ol.tilegrid.getForProjection = function(projection) {
-  var tileGrid = projection.getDefaultTileGrid();
-  if (!tileGrid) {
-    tileGrid = ol.tilegrid.createForProjection(projection);
-    projection.setDefaultTileGrid(tileGrid);
-  }
-  return tileGrid;
-};
-
-
-/**
- * @param {ol.Extent} extent Extent.
- * @param {number=} opt_maxZoom Maximum zoom level (default is
- *     ol.DEFAULT_MAX_ZOOM).
- * @param {number|ol.Size=} opt_tileSize Tile size (default uses
- *     ol.DEFAULT_TILE_SIZE).
- * @param {ol.extent.Corner=} opt_corner Extent corner (default is
- *     ol.extent.Corner.TOP_LEFT).
- * @return {!ol.tilegrid.TileGrid} TileGrid instance.
- */
-ol.tilegrid.createForExtent = function(extent, opt_maxZoom, opt_tileSize, opt_corner) {
-  var corner = opt_corner !== undefined ?
-      opt_corner : ol.extent.Corner.TOP_LEFT;
-
-  var resolutions = ol.tilegrid.resolutionsFromExtent(
-      extent, opt_maxZoom, opt_tileSize);
-
-  return new ol.tilegrid.TileGrid({
-    extent: extent,
-    origin: ol.extent.getCorner(extent, corner),
-    resolutions: resolutions,
-    tileSize: opt_tileSize
-  });
-};
-
-
-/**
- * Creates a tile grid with a standard XYZ tiling scheme.
- * @param {olx.tilegrid.XYZOptions=} opt_options Tile grid options.
- * @return {ol.tilegrid.TileGrid} Tile grid instance.
- * @api
- */
-ol.tilegrid.createXYZ = function(opt_options) {
-  var options = /** @type {olx.tilegrid.TileGridOptions} */ ({});
-  ol.obj.assign(options, opt_options !== undefined ?
-      opt_options : /** @type {olx.tilegrid.XYZOptions} */ ({}));
-  if (options.extent === undefined) {
-    options.extent = ol.proj.get('EPSG:3857').getExtent();
-  }
-  options.resolutions = ol.tilegrid.resolutionsFromExtent(
-      options.extent, options.maxZoom, options.tileSize);
-  delete options.maxZoom;
-
-  return new ol.tilegrid.TileGrid(options);
-};
-
-
-/**
- * Create a resolutions array from an extent.  A zoom factor of 2 is assumed.
- * @param {ol.Extent} extent Extent.
- * @param {number=} opt_maxZoom Maximum zoom level (default is
- *     ol.DEFAULT_MAX_ZOOM).
- * @param {number|ol.Size=} opt_tileSize Tile size (default uses
- *     ol.DEFAULT_TILE_SIZE).
- * @return {!Array.<number>} Resolutions array.
- */
-ol.tilegrid.resolutionsFromExtent = function(extent, opt_maxZoom, opt_tileSize) {
-  var maxZoom = opt_maxZoom !== undefined ?
-      opt_maxZoom : ol.DEFAULT_MAX_ZOOM;
-
-  var height = ol.extent.getHeight(extent);
-  var width = ol.extent.getWidth(extent);
-
-  var tileSize = ol.size.toSize(opt_tileSize !== undefined ?
-      opt_tileSize : ol.DEFAULT_TILE_SIZE);
-  var maxResolution = Math.max(
-      width / tileSize[0], height / tileSize[1]);
-
-  var length = maxZoom + 1;
-  var resolutions = new Array(length);
-  for (var z = 0; z < length; ++z) {
-    resolutions[z] = maxResolution / Math.pow(2, z);
-  }
-  return resolutions;
-};
-
-
-/**
- * @param {ol.ProjectionLike} projection Projection.
- * @param {number=} opt_maxZoom Maximum zoom level (default is
- *     ol.DEFAULT_MAX_ZOOM).
- * @param {ol.Size=} opt_tileSize Tile size (default uses ol.DEFAULT_TILE_SIZE).
- * @param {ol.extent.Corner=} opt_corner Extent corner (default is
- *     ol.extent.Corner.BOTTOM_LEFT).
- * @return {!ol.tilegrid.TileGrid} TileGrid instance.
- */
-ol.tilegrid.createForProjection = function(projection, opt_maxZoom, opt_tileSize, opt_corner) {
-  var extent = ol.tilegrid.extentFromProjection(projection);
-  return ol.tilegrid.createForExtent(
-      extent, opt_maxZoom, opt_tileSize, opt_corner);
-};
-
-
-/**
- * Generate a tile grid extent from a projection.  If the projection has an
- * extent, it is used.  If not, a global extent is assumed.
- * @param {ol.ProjectionLike} projection Projection.
- * @return {ol.Extent} Extent.
- */
-ol.tilegrid.extentFromProjection = function(projection) {
-  projection = ol.proj.get(projection);
-  var extent = projection.getExtent();
-  if (!extent) {
-    var half = 180 * ol.proj.METERS_PER_UNIT[ol.proj.Units.DEGREES] /
-        projection.getMetersPerUnit();
-    extent = ol.extent.createOrUpdate(-half, -half, half, half);
-  }
-  return extent;
-};
diff --git a/test/spec/ol/renderer/canvas/vectortilelayer.test.js b/test/spec/ol/renderer/canvas/vectortilelayer.test.js
index 377ef7dfd2..7c3de22187 100644
--- a/test/spec/ol/renderer/canvas/vectortilelayer.test.js
+++ b/test/spec/ol/renderer/canvas/vectortilelayer.test.js
@@ -13,6 +13,7 @@ goog.require('ol.renderer.canvas.VectorTileLayer');
 goog.require('ol.source.VectorTile');
 goog.require('ol.style.Style');
 goog.require('ol.style.Text');
+goog.require('ol.tilegrid');
 
 
 describe('ol.renderer.canvas.VectorTileLayer', function() {
diff --git a/test/spec/ol/reproj/tile.test.js b/test/spec/ol/reproj/tile.test.js
index 76e2f6e9ed..ffdde87d49 100644
--- a/test/spec/ol/reproj/tile.test.js
+++ b/test/spec/ol/reproj/tile.test.js
@@ -4,6 +4,7 @@ goog.require('ol.ImageTile');
 goog.require('ol.events');
 goog.require('ol.proj');
 goog.require('ol.reproj.Tile');
+goog.require('ol.tilegrid');
 
 
 describe('ol.reproj.Tile', function() {
diff --git a/test/spec/ol/source/tileimage.test.js b/test/spec/ol/source/tileimage.test.js
index fd4aac2dbf..eda13462f1 100644
--- a/test/spec/ol/source/tileimage.test.js
+++ b/test/spec/ol/source/tileimage.test.js
@@ -7,6 +7,7 @@ goog.require('ol.proj');
 goog.require('ol.proj.Projection');
 goog.require('ol.reproj.Tile');
 goog.require('ol.source.TileImage');
+goog.require('ol.tilegrid');
 
 
 describe('ol.source.TileImage', function() {
diff --git a/test/spec/ol/source/tilewms.test.js b/test/spec/ol/source/tilewms.test.js
index 4c1b055ac1..72f986e95a 100644
--- a/test/spec/ol/source/tilewms.test.js
+++ b/test/spec/ol/source/tilewms.test.js
@@ -1,8 +1,9 @@
 goog.provide('ol.test.source.TileWMS');
 
 goog.require('ol.ImageTile');
-goog.require('ol.source.TileWMS');
 goog.require('ol.proj');
+goog.require('ol.source.TileWMS');
+goog.require('ol.tilegrid');
 goog.require('ol.tilegrid.TileGrid');
 
 
diff --git a/test/spec/ol/source/urltile.test.js b/test/spec/ol/source/urltile.test.js
index f73a3a3f5c..a94617c79f 100644
--- a/test/spec/ol/source/urltile.test.js
+++ b/test/spec/ol/source/urltile.test.js
@@ -2,6 +2,7 @@ goog.provide('ol.test.source.UrlTile');
 
 goog.require('ol.proj');
 goog.require('ol.source.UrlTile');
+goog.require('ol.tilegrid');
 
 
 describe('ol.source.UrlTile', function() {
diff --git a/test/spec/ol/source/vectortile.test.js b/test/spec/ol/source/vectortile.test.js
index 63235df52e..b634c7a69c 100644
--- a/test/spec/ol/source/vectortile.test.js
+++ b/test/spec/ol/source/vectortile.test.js
@@ -4,6 +4,7 @@ goog.require('ol.VectorTile');
 goog.require('ol.format.MVT');
 goog.require('ol.proj');
 goog.require('ol.source.VectorTile');
+goog.require('ol.tilegrid');
 
 
 describe('ol.source.VectorTile', function() {
diff --git a/test/spec/ol/source/xyz.test.js b/test/spec/ol/source/xyz.test.js
index 13858edec2..47cd1c1643 100644
--- a/test/spec/ol/source/xyz.test.js
+++ b/test/spec/ol/source/xyz.test.js
@@ -4,6 +4,7 @@ goog.require('ol.source.Tile');
 goog.require('ol.source.TileImage');
 goog.require('ol.source.UrlTile');
 goog.require('ol.source.XYZ');
+goog.require('ol.tilegrid');
 
 
 describe('ol.source.XYZ', function() {
diff --git a/test/spec/ol/tilegrid/tilegrid.test.js b/test/spec/ol/tilegrid/tilegrid.test.js
index 9d37e41432..d0b811ef9e 100644
--- a/test/spec/ol/tilegrid/tilegrid.test.js
+++ b/test/spec/ol/tilegrid/tilegrid.test.js
@@ -1,11 +1,12 @@
 goog.provide('ol.test.TileGrid');
 
+goog.require('ol.TileRange');
 goog.require('ol.extent');
 goog.require('ol.proj');
-goog.require('ol.proj.METERS_PER_UNIT');
 goog.require('ol.proj.EPSG3857');
+goog.require('ol.proj.METERS_PER_UNIT');
 goog.require('ol.proj.Projection');
-goog.require('ol.TileRange');
+goog.require('ol.tilegrid');
 goog.require('ol.tilegrid.TileGrid');
 
 
diff --git a/test/spec/ol/tileurlfunction.test.js b/test/spec/ol/tileurlfunction.test.js
index c4696755d6..d4f1019ff1 100644
--- a/test/spec/ol/tileurlfunction.test.js
+++ b/test/spec/ol/tileurlfunction.test.js
@@ -1,6 +1,7 @@
 goog.provide('ol.test.TileUrlFunction');
 
 goog.require('ol.TileUrlFunction');
+goog.require('ol.tilegrid');
 goog.require('ol.tilegrid.TileGrid');
 
 
diff --git a/test_rendering/spec/ol/layer/image.test.js b/test_rendering/spec/ol/layer/image.test.js
index f5d655ecc2..60757d6b2d 100644
--- a/test_rendering/spec/ol/layer/image.test.js
+++ b/test_rendering/spec/ol/layer/image.test.js
@@ -6,6 +6,7 @@ goog.require('ol.layer.Image');
 goog.require('ol.obj');
 goog.require('ol.proj');
 goog.require('ol.source.ImageStatic');
+goog.require('ol.tilegrid');
 
 
 describe('ol.rendering.layer.Image', function() {
diff --git a/test_rendering/spec/ol/layer/vectortile.test.js b/test_rendering/spec/ol/layer/vectortile.test.js
index 77b24d38d3..215ccc44b4 100644
--- a/test_rendering/spec/ol/layer/vectortile.test.js
+++ b/test_rendering/spec/ol/layer/vectortile.test.js
@@ -6,6 +6,7 @@ goog.require('ol.format.MVT');
 goog.require('ol.layer.VectorTile');
 goog.require('ol.obj');
 goog.require('ol.source.VectorTile');
+goog.require('ol.tilegrid');
 
 
 describe('ol.rendering.layer.VectorTile', function() {
diff --git a/test_rendering/spec/ol/reproj/image.test.js b/test_rendering/spec/ol/reproj/image.test.js
index 08069072a2..62a7f9223a 100644
--- a/test_rendering/spec/ol/reproj/image.test.js
+++ b/test_rendering/spec/ol/reproj/image.test.js
@@ -5,6 +5,7 @@ goog.require('ol.proj');
 goog.require('ol.proj.EPSG3857');
 goog.require('ol.reproj.Image');
 goog.require('ol.source.ImageStatic');
+goog.require('ol.tilegrid');
 
 
 describe('ol.rendering.reproj.Image', function() {
diff --git a/test_rendering/spec/ol/reproj/tile.test.js b/test_rendering/spec/ol/reproj/tile.test.js
index 06129029b7..cce2b29035 100644
--- a/test_rendering/spec/ol/reproj/tile.test.js
+++ b/test_rendering/spec/ol/reproj/tile.test.js
@@ -1,10 +1,11 @@
 goog.provide('ol.test.rendering.reproj.Tile');
 
+goog.require('ol.TileState');
 goog.require('ol.events');
 goog.require('ol.proj');
 goog.require('ol.reproj.Tile');
 goog.require('ol.source.XYZ');
-goog.require('ol.TileState');
+goog.require('ol.tilegrid');
 
 
 describe('ol.rendering.reproj.Tile', function() {