diff --git a/src/pixi/renderers/webgl/shaders/PixiShader.js b/src/pixi/renderers/webgl/shaders/PixiShader.js
index 8e7a7c4..59fc501 100644
--- a/src/pixi/renderers/webgl/shaders/PixiShader.js
+++ b/src/pixi/renderers/webgl/shaders/PixiShader.js
@@ -371,7 +371,7 @@
 PIXI.PixiShader.defaultVertexSrc = [
     'attribute vec2 aVertexPosition;',
     'attribute vec2 aTextureCoord;',
-    'attribute vec4 aColor;',
+    'attribute vec2 aColor;',
 
     'uniform vec2 projectionVector;',
     'uniform vec2 offsetVector;',