diff --git a/bin/shaders/GSdx.fx b/bin/shaders/GSdx.fx
index 2d9468f90c..b61eba8750 100644
--- a/bin/shaders/GSdx.fx
+++ b/bin/shaders/GSdx.fx
@@ -48,6 +48,7 @@ in SHADER
 {
     vec4 p;
     vec2 t;
+    vec4 c;
 } PSin;
 
 layout(location = 0) out vec4 SV_Target0;