diff --git a/stepmania/src/RageDisplay_OGL_Helpers.h b/stepmania/src/RageDisplay_OGL_Helpers.h
index fec3981bd4..18777c9df1 100644
--- a/stepmania/src/RageDisplay_OGL_Helpers.h
+++ b/stepmania/src/RageDisplay_OGL_Helpers.h
@@ -33,6 +33,7 @@ namespace RageDisplay_OGL_Helpers
 	RString GLToString( GLenum e );
 };
 
+class RenderTargetParam;
 class RenderTarget
 {
 public: