--- OLD/xc/lib/Xmu/StrToLong.c	Thu Jan  1 00:00:00 1970
+++ NEW/xc/lib/Xmu/StrToLong.c	Thu Jan  1 00:00:00 1970
@@ -22,6 +22,7 @@
 
 */
 
+#include <stdio.h>
 
 #include <X11/Intrinsic.h>
 #include "Converters.h"