diff --git a/src/modules/graphics/wrap_Graphics.lua b/src/modules/graphics/wrap_Graphics.lua
index fb2594ddf..fe94d2da4 100644
--- a/src/modules/graphics/wrap_Graphics.lua
+++ b/src/modules/graphics/wrap_Graphics.lua
@@ -263,6 +263,9 @@ void main() {
 }]],
 
 	MAIN_CUSTOM = [[
+varying vec4 VaryingColor;
+varying vec4 VaryingTexCoord;
+
 void effect();
 
 void main() {