diff --git a/src/ol/renderer/maprenderer.js b/src/ol/renderer/maprenderer.js
index 8c9de9c479..3e67e48cf8 100644
--- a/src/ol/renderer/maprenderer.js
+++ b/src/ol/renderer/maprenderer.js
@@ -139,25 +139,6 @@ ol.renderer.Map.prototype.disposeInternal = function() {
 };
 
 
-/**
- * @param {function(this: T, ol.layer.Layer, ol.renderer.Layer, number)} f
- *     Function.
- * @param {T=} opt_obj Object.
- * @template T
- */
-ol.renderer.Map.prototype.forEachReadyVisibleLayer = function(f, opt_obj) {
-  var layers = this.map.getLayers();
-  if (goog.isDef(layers)) {
-    layers.forEach(function(layer, index) {
-      if (layer.isReady() && layer.getVisible()) {
-        var layerRenderer = this.getLayerRenderer(layer);
-        f.call(opt_obj, layer, layerRenderer, index);
-      }
-    }, this);
-  }
-};
-
-
 /**
  * @param {ol.Pixel} pixel Pixel.
  * @return {ol.Coordinate} Coordinate.
diff --git a/src/ol/renderer/webgl/webglmaprenderer.js b/src/ol/renderer/webgl/webglmaprenderer.js
index c32b09c9cc..72c98aa8e3 100644
--- a/src/ol/renderer/webgl/webglmaprenderer.js
+++ b/src/ol/renderer/webgl/webglmaprenderer.js
@@ -302,6 +302,26 @@ ol.renderer.webgl.Map.prototype.disposeInternal = function() {
 };
 
 
+/**
+ * @param {function(this: T, ol.layer.Layer, ol.renderer.webgl.Layer, number)} f
+ *     Function.
+ * @param {T=} opt_obj Object.
+ * @template T
+ */
+ol.renderer.webgl.Map.prototype.forEachReadyVisibleLayer =
+    function(f, opt_obj) {
+  var layers = this.map.getLayers();
+  if (goog.isDef(layers)) {
+    layers.forEach(function(layer, index) {
+      if (layer.isReady() && layer.getVisible()) {
+        var layerRenderer = this.getLayerRenderer(layer);
+        f.call(opt_obj, layer, layerRenderer, index);
+      }
+    }, this);
+  }
+};
+
+
 /**
  * @return {WebGLRenderingContext} GL.
  */