These headers are system headers, not local headers
diff --git a/include/SDL_platform.h b/include/SDL_platform.h
index 79b8b6f..efa93e3 100644
--- a/include/SDL_platform.h
+++ b/include/SDL_platform.h
@@ -68,8 +68,8 @@
#if defined(__APPLE__)
/* lets us know what version of Mac OS X we're compiling on */
-#include "AvailabilityMacros.h"
-#include "TargetConditionals.h"
+#include <AvailabilityMacros.h>
+#include <TargetConditionals.h>
/* Fix building with older SDKs that don't define these
See this for more information: