diff --git a/libnm-glib/nm-vpn-plugin.c b/libnm-glib/nm-vpn-plugin.c
index 0894fa9095..d180ec447f 100644
--- a/libnm-glib/nm-vpn-plugin.c
+++ b/libnm-glib/nm-vpn-plugin.c
@@ -426,6 +426,7 @@ connect_timer_start (NMVPNPlugin *plugin)
 {
 	NMVPNPluginPrivate *priv = NM_VPN_PLUGIN_GET_PRIVATE (plugin);
 
+	nm_clear_g_source (&priv->connect_timer);
 	priv->connect_timer = g_timeout_add_seconds (60, connect_timer_expired, plugin);
 }