diff --git a/xlat.c b/xlat.c
index dc9be0a1..b627f3ab 100644
--- a/xlat.c
+++ b/xlat.c
@@ -1,4 +1,5 @@
 #include <windows.h>
+#include <stdio.h>
 #include "putty.h"
 
 static unsigned char win2koi[] =