--- src/SDL_internal.h
+++ src/SDL_internal.h
@@ -78,7 +78,7 @@
 #ifndef _DARWIN_C_SOURCE
 #define _DARWIN_C_SOURCE 1 // for memset_pattern4()
 #endif
-#include <Availability.h>
+#include <AvailabilityMacros.h>
 
 #ifndef __IPHONE_OS_VERSION_MAX_ALLOWED
 #define __IPHONE_OS_VERSION_MAX_ALLOWED 0