diff -r 7ee46ffa9c24 -r fb2933ca805f src/atomic/SDL_spinlock.c
--- a/src/atomic/SDL_spinlock.c	Sun Mar 09 10:38:30 2014 -0700
+++ b/src/atomic/SDL_spinlock.c	Sun Mar 09 11:36:47 2014 -0700
@@ -20,7 +20,7 @@
 */
 #include "../SDL_internal.h"
 
-#ifdef __WIN32__
+#if defined(__WIN32__) || defined(__WINRT__)
 #include "../core/windows/SDL_windows.h"
 #endif