1 files changed, 7 insertions, 0 deletions

diff --git a/uisimulator/sdl/thread-sdl.h b/uisimulator/sdl/thread-sdl.h
index a661f582a4..30d0adae49 100644
--- a/uisimulator/sdl/thread-sdl.h
+++ b/uisimulator/sdl/thread-sdl.h
@@ -17,7 +17,14 @@
  *
  ****************************************************************************/
 
+#ifndef __THREADSDL_H__
+#define __THREADSDL_H__
+
+#include "SDL_thread.h"
+
 extern SDL_Thread* threads[256];
 extern int         threadCount;
 extern SDL_mutex*  mutex;
 
+#endif // #ifndef __THREADSDL_H__
+