diff --git a/flixel/addons/display/FlxRuntimeShader.hx b/flixel/addons/display/FlxRuntimeShader.hx
index 971eac00..bd385e46 100644
--- a/flixel/addons/display/FlxRuntimeShader.hx
+++ b/flixel/addons/display/FlxRuntimeShader.hx
@@ -30,7 +30,7 @@ import openfl.display.ShaderParameter;
  * @see https://github.com/openfl/openfl/blob/develop/src/openfl/utils/_internal/ShaderMacro.hx
  * @see https://dixonary.co.uk/blog/shadertoy
  */
-class FlxRuntimeShader extends FlxShader
+class FlxRuntimeShader extends FlxGraphicsShader
 {
 	#if FLX_DRAW_QUADS
 	// We need to add stuff from FlxGraphicsShader too!