diff --git a/src/SDL.c b/src/SDL.c
index 2b2cc45d47..c27ad809c5 100644
--- a/src/SDL.c
+++ b/src/SDL.c
@@ -237,7 +237,7 @@ int SDL_InitSubSystem(Uint32 flags)
 
     /* Initialize the video subsystem */
     if (flags & SDL_INIT_VIDEO) {
-#if !SDL_VIDEO_DISABLED
+#ifndef SDL_VIDEO_DISABLED
         if (SDL_ShouldInitSubsystem(SDL_INIT_VIDEO)) {
             SDL_IncrementSubsystemRefCount(SDL_INIT_VIDEO);
             if (SDL_VideoInit(NULL) < 0) {
@@ -417,7 +417,7 @@ void SDL_QuitSubSystem(Uint32 flags)
     }
 #endif
 
-#if !SDL_VIDEO_DISABLED
+#ifndef SDL_VIDEO_DISABLED
     if (flags & SDL_INIT_VIDEO) {
         /* video implies events */
         flags |= SDL_INIT_EVENTS;