diff --git a/src/supplicant-manager/nm-supplicant-interface.c b/src/supplicant-manager/nm-supplicant-interface.c
index 2bfc400b49..e087729269 100644
--- a/src/supplicant-manager/nm-supplicant-interface.c
+++ b/src/supplicant-manager/nm-supplicant-interface.c
@@ -1033,12 +1033,11 @@ add_blob_cb (DBusGProxy *proxy, DBusGProxyCall *call_id, gpointer user_data)
 	NMSupplicantInterface *self = NM_SUPPLICANT_INTERFACE (user_data);
 	NMSupplicantInterfacePrivate *priv = NM_SUPPLICANT_INTERFACE_GET_PRIVATE (self);
 	GError *err = NULL;
-	guint tmp;
 
 	priv->blobs_left--;
 
 	nm_call_store_remove (priv->assoc_pcalls, proxy, call_id);
-	if (!dbus_g_proxy_end_call (proxy, call_id, &err, G_TYPE_UINT, &tmp, G_TYPE_INVALID)) {
+	if (!dbus_g_proxy_end_call (proxy, call_id, &err, G_TYPE_INVALID)) {
 		nm_log_warn (LOGD_SUPPLICANT, "Couldn't set network certificates: %s.", err->message);
 		emit_error_helper (self, err);
 		g_error_free (err);