diff --git a/vpn-daemons/vpnc/src/nm-vpnc-service.c b/vpn-daemons/vpnc/src/nm-vpnc-service.c
index b90d9cd4cc..b297bd3d82 100644
--- a/vpn-daemons/vpnc/src/nm-vpnc-service.c
+++ b/vpn-daemons/vpnc/src/nm-vpnc-service.c
@@ -433,7 +433,7 @@ static gboolean nm_vpnc_config_write (guint vpnc_fd, const char *user_name, char
 	x = write (vpnc_fd, string, strlen (string));
 	g_free (string);
 
-	string = g_strdup_printf ("UDP Encapsulation Port %s\n", NM_VPNC_UDP_ENCAPSULATION_PORT);
+	string = g_strdup_printf ("UDP Encapsulation Port %d\n", NM_VPNC_UDP_ENCAPSULATION_PORT);
 	x = write (vpnc_fd, string, strlen (string));
 	g_free (string);