diff --git a/src/ol/deviceorientation.js b/src/ol/deviceorientation.js
index e114c8f6fd..d41a84750f 100644
--- a/src/ol/deviceorientation.js
+++ b/src/ol/deviceorientation.js
@@ -93,7 +93,7 @@ ol.DeviceOrientation = function(opt_options) {
   this.setTracking(options.tracking !== undefined ? options.tracking : false);
 
 };
-goog.inherits(ol.DeviceOrientation, ol.Object);
+ol.inherits(ol.DeviceOrientation, ol.Object);
 
 
 /**
diff --git a/src/ol/render/box.js b/src/ol/render/box.js
index b2b9fd154d..0a24e2a74e 100644
--- a/src/ol/render/box.js
+++ b/src/ol/render/box.js
@@ -47,7 +47,7 @@ ol.render.Box = function(className) {
   this.endPixel_ = null;
 
 };
-goog.inherits(ol.render.Box, ol.Disposable);
+ol.inherits(ol.render.Box, ol.Disposable);
 
 
 /**
diff --git a/src/ol/webgl/context.js b/src/ol/webgl/context.js
index b73a86dc94..1e2ce31379 100644
--- a/src/ol/webgl/context.js
+++ b/src/ol/webgl/context.js
@@ -94,7 +94,7 @@ ol.webgl.Context = function(canvas, gl) {
       this.handleWebGLContextRestored, this);
 
 };
-goog.inherits(ol.webgl.Context, ol.Disposable);
+ol.inherits(ol.webgl.Context, ol.Disposable);
 
 
 /**