diff --git a/drivers/isdn/gigaset/capi.c b/drivers/isdn/gigaset/capi.c
index ac0a2da1eef6160a6e66d3ad67446607e3850b30..d1afac2bf65077bf5cec89999aa51a16978c25ff 100644
--- a/drivers/isdn/gigaset/capi.c
+++ b/drivers/isdn/gigaset/capi.c
@@ -1254,7 +1254,7 @@ static void do_connect_req(struct gigaset_capi_ctr *iif,
 	commands[AT_DIAL] = kmalloc(l+3, GFP_KERNEL);
 	if (!commands[AT_DIAL])
 		goto oom;
-	snprintf(commands[AT_DIAL], l+3, "D%*s\r", l, pp);
+	snprintf(commands[AT_DIAL], l+3, "D%.*s\r", l, pp);
 
 	/* encode parameter: Calling party number */
 	pp = cmsg->CallingPartyNumber;