diff --git a/src/ol/imageurlfunction.js b/src/ol/imageurlfunction.js
index ebddedebdb..95a9a0a99b 100644
--- a/src/ol/imageurlfunction.js
+++ b/src/ol/imageurlfunction.js
@@ -5,8 +5,8 @@ goog.require('ol.Size');
 
 
 /**
- * @typedef {function(this:ol.source.Source, ol.Extent, ol.Size, ol.Projection):
- *     (string|undefined)}
+ * @typedef {function(this:ol.source.ImageSource, ol.Extent, ol.Size,
+ *     ol.Projection): (string|undefined)}
  */
 ol.ImageUrlFunctionType;
 
@@ -22,6 +22,7 @@ ol.ImageUrlFunction.createFromParamsFunction =
     function(baseUrl, params, paramsFunction) {
   return (
       /**
+       * @this {ol.source.ImageSource}
        * @param {ol.Extent} extent Extent.
        * @param {ol.Size} size Size.
        * @param {ol.Projection} projection Projection.
@@ -34,6 +35,7 @@ ol.ImageUrlFunction.createFromParamsFunction =
 
 
 /**
+ * @this {ol.source.ImageSource}
  * @param {ol.Extent} extent Extent.
  * @param {ol.Size} size Size.
  * @return {string|undefined} Image URL.
diff --git a/src/ol/source/bingmapssource.js b/src/ol/source/bingmapssource.js
index 226138140f..ceb5588d04 100644
--- a/src/ol/source/bingmapssource.js
+++ b/src/ol/source/bingmapssource.js
@@ -88,6 +88,7 @@ ol.source.BingMaps.prototype.handleImageryMetadataResponse =
                     .replace('{culture}', culture);
                 return (
                     /**
+                     * @this {ol.source.BingMaps}
                      * @param {ol.TileCoord} tileCoord Tile coordinate.
                      * @param {ol.Projection} projection Projection.
                      * @return {string|undefined} Tile URL.
diff --git a/src/ol/source/wmtssource.js b/src/ol/source/wmtssource.js
index 0e5a0312fa..12132d7d45 100644
--- a/src/ol/source/wmtssource.js
+++ b/src/ol/source/wmtssource.js
@@ -75,10 +75,12 @@ ol.source.WMTS = function(options) {
   function createFromWMTSTemplate(template) {
     return (
         /**
+         * @this {ol.source.WMTS}
          * @param {ol.TileCoord} tileCoord Tile coordinate.
+         * @param {ol.Projection} projection Projection.
          * @return {string|undefined} Tile URL.
          */
-        function(tileCoord) {
+        function(tileCoord, projection) {
           if (goog.isNull(tileCoord)) {
             return undefined;
           } else {
@@ -92,7 +94,6 @@ ol.source.WMTS = function(options) {
             }
             var url = template;
             for (var key in localContext) {
-              // FIXME: should we filter properties with hasOwnProperty?
               url = url.replace('{' + key + '}', localContext[key])
                   .replace('%7B' + key + '%7D', localContext[key]);
             }
@@ -122,7 +123,13 @@ ol.source.WMTS = function(options) {
   var tmpExtent = ol.extent.createEmpty();
   var tmpTileCoord = new ol.TileCoord(0, 0, 0);
   tileUrlFunction = ol.TileUrlFunction.withTileCoordTransform(
-      function(tileCoord, projection) {
+      /**
+       * @param {ol.TileCoord} tileCoord Tile coordinate.
+       * @param {ol.Projection} projection Projection.
+       * @param {ol.TileCoord=} opt_tileCoord Tile coordinate.
+       * @return {ol.TileCoord} Tile coordinate.
+       */
+      function(tileCoord, projection, opt_tileCoord) {
         var tileGrid = this.getTileGrid();
         goog.asserts.assert(!goog.isNull(tileGrid));
         if (tileGrid.getResolutions().length <= tileCoord.z) {
diff --git a/src/ol/tileurlfunction.js b/src/ol/tileurlfunction.js
index 545ae0e6a3..4ba3922ddf 100644
--- a/src/ol/tileurlfunction.js
+++ b/src/ol/tileurlfunction.js
@@ -8,7 +8,8 @@ goog.require('ol.extent');
 
 
 /**
- * @typedef {function(ol.TileCoord, ol.Projection): (string|undefined)}
+ * @typedef {function(this: ol.source.ImageTileSource, ol.TileCoord,
+ *     ol.Projection): (string|undefined)}
  */
 ol.TileUrlFunctionType;
 
@@ -20,6 +21,7 @@ ol.TileUrlFunctionType;
 ol.TileUrlFunction.createFromTemplate = function(template) {
   return (
       /**
+       * @this {ol.source.ImageTileSource}
        * @param {ol.TileCoord} tileCoord Tile Coordinate.
        * @param {ol.Projection} projection Projection.
        * @return {string|undefined} Tile URL.
@@ -56,6 +58,7 @@ ol.TileUrlFunction.createFromTileUrlFunctions = function(tileUrlFunctions) {
   }
   return (
       /**
+       * @this {ol.source.ImageTileSource}
        * @param {ol.TileCoord} tileCoord Tile Coordinate.
        * @param {ol.Projection} projection Projection.
        * @return {string|undefined} Tile URL.
@@ -84,6 +87,7 @@ ol.TileUrlFunction.createFromParamsFunction =
   var tmpExtent = ol.extent.createEmpty();
   return (
       /**
+       * @this {ol.source.ImageTileSource}
        * @param {ol.TileCoord} tileCoord Tile Coordinate.
        * @param {ol.Projection} projection Projection.
        * @return {string|undefined} Tile URL.
@@ -106,6 +110,7 @@ ol.TileUrlFunction.createFromParamsFunction =
 
 
 /**
+ * @this {ol.source.ImageTileSource}
  * @param {ol.TileCoord} tileCoord Tile coordinate.
  * @param {ol.Projection} projection Projection.
  * @return {string|undefined} Tile URL.
@@ -126,6 +131,7 @@ ol.TileUrlFunction.withTileCoordTransform =
   var tmpTileCoord = new ol.TileCoord(0, 0, 0);
   return (
       /**
+       * @this {ol.source.ImageTileSource}
        * @param {ol.TileCoord} tileCoord Tile Coordinate.
        * @param {ol.Projection} projection Projection.
        * @return {string|undefined} Tile URL.