diff --git a/stepmania/src/RageDisplay_OGL.cpp b/stepmania/src/RageDisplay_OGL.cpp
index e3e8910d6e..3e82ca28e0 100644
--- a/stepmania/src/RageDisplay_OGL.cpp
+++ b/stepmania/src/RageDisplay_OGL.cpp
@@ -180,7 +180,6 @@ struct GLPixFmtInfo_t {
 	}
 };
 
-Uint32 mySDL_Swap24(Uint32 x);
 
 static void FixLilEndian()
 {
diff --git a/stepmania/src/SDL_utils.h b/stepmania/src/SDL_utils.h
index f3b3fc8797..26e399277b 100644
--- a/stepmania/src/SDL_utils.h
+++ b/stepmania/src/SDL_utils.h
@@ -9,6 +9,8 @@
 #undef Font
 #undef Screen
 
+Uint32 mySDL_Swap24(Uint32 x);
+
 Uint32 decodepixel(const Uint8 *p, int bpp);
 void encodepixel(Uint8 *p, int bpp, Uint32 pixel);