diff --git a/src/menu.c b/src/menu.c
index b9c7922..b4f06d2 100644
--- a/src/menu.c
+++ b/src/menu.c
@@ -759,7 +759,7 @@
 			STRCPY(menu->strings[i] + 1, call_data);
 			if (c == Ctrl_C)
 			{
-			    int	    len = STRLEN(menu->strings[i]);
+			    int	    len = (int)STRLEN(menu->strings[i]);
 
 			    /* Append CTRL-\ CTRL-G to obey 'insertmode'. */
 			    menu->strings[i][len] = Ctrl_BSL;