diff --git a/src/ol/source/zoomify.js b/src/ol/source/zoomify.js
index 173647a9f4..932ffc9a61 100644
--- a/src/ol/source/zoomify.js
+++ b/src/ol/source/zoomify.js
@@ -10,15 +10,6 @@ goog.require('ol.source.TileImage');
 goog.require('ol.tilegrid.TileGrid');
 
 
-/**
- * @enum {string}
- */
-ol.source.ZoomifyTierSizeCalculation = {
-  DEFAULT: 'default',
-  TRUNCATED: 'truncated'
-};
-
-
 /**
  * @classdesc
  * Layer source for tile data in Zoomify format.
@@ -35,7 +26,7 @@ ol.source.Zoomify = function(opt_options) {
   var size = options.size;
   var tierSizeCalculation = options.tierSizeCalculation !== undefined ?
       options.tierSizeCalculation :
-      ol.source.ZoomifyTierSizeCalculation.DEFAULT;
+      ol.source.Zoomify.TierSizeCalculation.DEFAULT;
 
   var imageWidth = size[0];
   var imageHeight = size[1];
@@ -43,7 +34,7 @@ ol.source.Zoomify = function(opt_options) {
   var tileSize = ol.DEFAULT_TILE_SIZE;
 
   switch (tierSizeCalculation) {
-    case ol.source.ZoomifyTierSizeCalculation.DEFAULT:
+    case ol.source.Zoomify.TierSizeCalculation.DEFAULT:
       while (imageWidth > tileSize || imageHeight > tileSize) {
         tierSizeInTiles.push([
           Math.ceil(imageWidth / tileSize),
@@ -52,7 +43,7 @@ ol.source.Zoomify = function(opt_options) {
         tileSize += tileSize;
       }
       break;
-    case ol.source.ZoomifyTierSizeCalculation.TRUNCATED:
+    case ol.source.Zoomify.TierSizeCalculation.TRUNCATED:
       var width = imageWidth;
       var height = imageHeight;
       while (width > tileSize || height > tileSize) {
@@ -123,7 +114,7 @@ ol.source.Zoomify = function(opt_options) {
     crossOrigin: options.crossOrigin,
     logo: options.logo,
     reprojectionErrorThreshold: options.reprojectionErrorThreshold,
-    tileClass: ol.source.ZoomifyTile_,
+    tileClass: ol.source.Zoomify.Tile_,
     tileGrid: tileGrid,
     tileUrlFunction: tileUrlFunction
   });
@@ -142,7 +133,7 @@ ol.inherits(ol.source.Zoomify, ol.source.TileImage);
  * @param {ol.TileLoadFunctionType} tileLoadFunction Tile load function.
  * @private
  */
-ol.source.ZoomifyTile_ = function(
+ol.source.Zoomify.Tile_ = function(
     tileCoord, state, src, crossOrigin, tileLoadFunction) {
 
   ol.ImageTile.call(this, tileCoord, state, src, crossOrigin, tileLoadFunction);
@@ -155,13 +146,13 @@ ol.source.ZoomifyTile_ = function(
   this.zoomifyImageByContext_ = {};
 
 };
-ol.inherits(ol.source.ZoomifyTile_, ol.ImageTile);
+ol.inherits(ol.source.Zoomify.Tile_, ol.ImageTile);
 
 
 /**
  * @inheritDoc
  */
-ol.source.ZoomifyTile_.prototype.getImage = function(opt_context) {
+ol.source.Zoomify.Tile_.prototype.getImage = function(opt_context) {
   var tileSize = ol.DEFAULT_TILE_SIZE;
   var key = opt_context !== undefined ?
       ol.getUid(opt_context).toString() : '';
@@ -184,3 +175,12 @@ ol.source.ZoomifyTile_.prototype.getImage = function(opt_context) {
     }
   }
 };
+
+
+/**
+ * @enum {string}
+ */
+ol.source.Zoomify.TierSizeCalculation = {
+  DEFAULT: 'default',
+  TRUNCATED: 'truncated'
+};
diff --git a/test/spec/ol/source/zoomify.test.js b/test/spec/ol/source/zoomify.test.js
index 0eabc60b2c..44b4b36e71 100644
--- a/test/spec/ol/source/zoomify.test.js
+++ b/test/spec/ol/source/zoomify.test.js
@@ -189,15 +189,15 @@ describe('ol.source.Zoomify', function() {
 
   describe('uses a custom tileClass', function() {
 
-    it('uses "ol.source.ZoomifyTile_" as tileClass', function() {
+    it('uses "ol.source.Zoomify.Tile_" as tileClass', function() {
       var source = getZoomifySource();
-      expect(source.tileClass).to.be(ol.source.ZoomifyTile_);
+      expect(source.tileClass).to.be(ol.source.Zoomify.Tile_);
     });
 
     it('returns expected tileClass instances via "getTile"', function() {
       var source = getZoomifySource();
       var tile = source.getTile(0, 0, -1, 1, proj);
-      expect(tile).to.be.an(ol.source.ZoomifyTile_);
+      expect(tile).to.be.an(ol.source.Zoomify.Tile_);
     });
 
     it('"tile.getImage" returns and caches an unloaded image', function() {