diff --git a/src/ol/webgl/layerrenderer.js b/src/ol/webgl/layerrenderer.js
index 86b67feadb..6e0a3bdbb1 100644
--- a/src/ol/webgl/layerrenderer.js
+++ b/src/ol/webgl/layerrenderer.js
@@ -18,6 +18,14 @@ ol.webgl.LayerRenderer = function(map, layer) {
 goog.inherits(ol.webgl.LayerRenderer, ol.LayerRenderer);
 
 
+/**
+ * @protected
+ */
+ol.webgl.LayerRenderer.prototype.dispatchChangeEvent = function() {
+  this.dispatchEvent(goog.events.EventType.CHANGE);
+};
+
+
 /**
  * @return {WebGLTexture} Texture.
  */
@@ -48,6 +56,22 @@ ol.webgl.LayerRenderer.prototype.getMap = function() {
 ol.webgl.LayerRenderer.prototype.getMatrix = goog.abstractMethod;
 
 
+/**
+ * @inheritDoc
+ */
+ol.webgl.LayerRenderer.prototype.handleLayerOpacityChange = function() {
+  this.dispatchChangeEvent();
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.webgl.LayerRenderer.prototype.handleLayerVisibleChange = function() {
+  this.dispatchChangeEvent();
+};
+
+
 /**
  */
 ol.webgl.LayerRenderer.prototype.handleWebGLContextLost = goog.nullFunction;
diff --git a/src/ol/webgl/tilelayerrenderer.js b/src/ol/webgl/tilelayerrenderer.js
index 902bb57cc6..379a5e2347 100644
--- a/src/ol/webgl/tilelayerrenderer.js
+++ b/src/ol/webgl/tilelayerrenderer.js
@@ -212,14 +212,6 @@ ol.webgl.TileLayerRenderer.prototype.getTexture = function() {
 };
 
 
-/**
- * @protected
- */
-ol.webgl.TileLayerRenderer.prototype.dispatchChangeEvent = function() {
-  this.dispatchEvent(goog.events.EventType.CHANGE);
-};
-
-
 /**
  * @protected
  */
@@ -386,19 +378,3 @@ ol.webgl.TileLayerRenderer.prototype.render = function() {
       1);
 
 };
-
-
-/**
- * @inheritDoc
- */
-ol.webgl.TileLayerRenderer.prototype.handleLayerOpacityChange = function() {
-  this.dispatchChangeEvent();
-};
-
-
-/**
- * @inheritDoc
- */
-ol.webgl.TileLayerRenderer.prototype.handleLayerVisibleChange = function() {
-  this.dispatchChangeEvent();
-};