diff --git a/src/pixi/renderers/WebGLRenderGroup.js b/src/pixi/renderers/WebGLRenderGroup.js
index 75710a4..247df10 100644
--- a/src/pixi/renderers/WebGLRenderGroup.js
+++ b/src/pixi/renderers/WebGLRenderGroup.js
@@ -781,7 +781,7 @@
 /**
  * @private
  */
-PIXI.WebGLRenderer.prototype.initStrip = function(strip)
+PIXI.WebGLRenderGroup.prototype.initStrip = function(strip)
 {
 	// build the strip!
 	var gl = this.gl;