diff --git a/src/osd/sdl/sdlprefix.h b/src/osd/sdl/sdlprefix.h
index 617155dbe2a..514005ba072 100644
--- a/src/osd/sdl/sdlprefix.h
+++ b/src/osd/sdl/sdlprefix.h
@@ -80,9 +80,3 @@ struct _IO_FILE {};  //_IO_FILE is an opaque type in the emscripten libc which m
 #ifdef __GNUC__
 #define alloca  __builtin_alloca
 #endif
-
-//============================================================
-// misc.
-//============================================================
-
-#define PATH_SEPARATOR      "/"