diff --git a/Source/gs/GSH_OpenGL/GSH_OpenGL.cpp b/Source/gs/GSH_OpenGL/GSH_OpenGL.cpp
index 1e042aad..b34f6ed5 100644
--- a/Source/gs/GSH_OpenGL/GSH_OpenGL.cpp
+++ b/Source/gs/GSH_OpenGL/GSH_OpenGL.cpp
@@ -9,7 +9,7 @@
 //#define _WIREFRAME
 
 //#define HIGHRES_MODE
-#ifdef HIGHRES_MODE
+#if defined(HIGHRES_MODE) || defined(GLES_COMPATIBILITY)
 #define FBSCALE (2.0f)
 #else
 #define FBSCALE (1.0f)