diff --git a/include/SDL_opengl.h b/include/SDL_opengl.h
index 61f3c5c4b..0e5ed0fde 100644
--- a/include/SDL_opengl.h
+++ b/include/SDL_opengl.h
@@ -5105,9 +5105,14 @@ typedef char GLchar;
 
 #ifndef GL_VERSION_1_5
 /* GL types for handling large vertex buffer objects */
+#if defined(__APPLE__)
+typedef long GLintptr;
+typedef long GLsizeiptr;
+#else
 typedef ptrdiff_t GLintptr;
 typedef ptrdiff_t GLsizeiptr;
 #endif
+#endif
 
 #ifndef GL_ARB_vertex_buffer_object
 /* GL types for handling large vertex buffer objects */