diff --git a/source/blender/blenlib/intern/threads.c b/source/blender/blenlib/intern/threads.c
index d82d68ff67b..59951de617b 100644
--- a/source/blender/blenlib/intern/threads.c
+++ b/source/blender/blenlib/intern/threads.c
@@ -39,6 +39,10 @@
 #include "BLI_blenlib.h"
 #include "BLI_threads.h"
 
+#ifdef WIN32
+#include "Windows.h"
+#endif
+
 
 /* ********** basic thread control API ************