diff --git a/terminal.c b/terminal.c
index 0d0eca6d..416b1016 100644
--- a/terminal.c
+++ b/terminal.c
@@ -4,7 +4,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
-
+#include <string.h>
 #include "putty.h"
 
 static unsigned long *text;	       /* buffer of text on terminal screen */