diff --git a/src/stdafx.h b/src/stdafx.h
index ace3d6163c..42e8cac096 100644
--- a/src/stdafx.h
+++ b/src/stdafx.h
@@ -52,6 +52,7 @@
 #		include <inttypes.h>
 #	else
 #		define __STDC_LIMIT_MACROS
+#		define __STDC_FORMAT_MACROS
 #		include <stdint.h>
 #	endif
 #endif