diff --git a/src/ol/renderer/canvas/canvastilelayerrenderer.js b/src/ol/renderer/canvas/canvastilelayerrenderer.js
index e7c48f044c..3e55fec20d 100644
--- a/src/ol/renderer/canvas/canvastilelayerrenderer.js
+++ b/src/ol/renderer/canvas/canvastilelayerrenderer.js
@@ -129,9 +129,9 @@ ol.renderer.canvas.TileLayer.prototype.renderFrame =
   var tilesToDrawByZ = {};
   tilesToDrawByZ[z] = {};
 
-  function isLoaded(tile) {
+  var isLoaded = function(tile) {
     return !goog.isNull(tile) && tile.getState() == ol.TileState.LOADED;
-  }
+  };
   var findLoadedTiles = goog.bind(tileSource.findLoadedTiles, tileSource,
       tilesToDrawByZ, isLoaded);
 
diff --git a/src/ol/renderer/dom/domtilelayerrenderer.js b/src/ol/renderer/dom/domtilelayerrenderer.js
index faeb67d47d..b6157b40d4 100644
--- a/src/ol/renderer/dom/domtilelayerrenderer.js
+++ b/src/ol/renderer/dom/domtilelayerrenderer.js
@@ -93,9 +93,9 @@ ol.renderer.dom.TileLayer.prototype.renderFrame =
   var tilesToDrawByZ = {};
   tilesToDrawByZ[z] = {};
 
-  function isLoaded(tile) {
+  var isLoaded = function(tile) {
     return !goog.isNull(tile) && tile.getState() == ol.TileState.LOADED;
-  }
+  };
   var findLoadedTiles = goog.bind(tileSource.findLoadedTiles, tileSource,
       tilesToDrawByZ, isLoaded);
 
diff --git a/src/ol/renderer/webgl/webgltilelayerrenderer.js b/src/ol/renderer/webgl/webgltilelayerrenderer.js
index 53405ca10a..83efd39c39 100644
--- a/src/ol/renderer/webgl/webgltilelayerrenderer.js
+++ b/src/ol/renderer/webgl/webgltilelayerrenderer.js
@@ -365,10 +365,10 @@ ol.renderer.webgl.TileLayer.prototype.renderFrame =
     var tilesToDrawByZ = {};
     tilesToDrawByZ[z] = {};
 
-    function isLoaded(tile) {
+    var isLoaded = function(tile) {
       return !goog.isNull(tile) && tile.getState() == ol.TileState.LOADED &&
           mapRenderer.isTileTextureLoaded(tile);
-    }
+    };
     var findLoadedTiles = goog.bind(tileSource.findLoadedTiles, tileSource,
         tilesToDrawByZ, isLoaded);
 
diff --git a/src/ol/source/tiledwmssource.js b/src/ol/source/tiledwmssource.js
index b09147cf2c..a1093f21e4 100644
--- a/src/ol/source/tiledwmssource.js
+++ b/src/ol/source/tiledwmssource.js
@@ -69,7 +69,7 @@ ol.source.TiledWMS = function(tiledWMSOptions) {
     tileUrlFunction = ol.TileUrlFunction.nullTileUrlFunction;
   }
 
-  function tileCoordTransform(tileCoord) {
+  var tileCoordTransform = function(tileCoord) {
     if (tileGrid.getResolutions().length <= tileCoord.z) {
       return null;
     }
@@ -90,7 +90,7 @@ ol.source.TiledWMS = function(tiledWMSOptions) {
       return null;
     }
     return new ol.TileCoord(tileCoord.z, x, tileCoord.y);
-  }
+  };
 
   goog.base(this, {
     attributions: tiledWMSOptions.attributions,