diff --git a/src/devices/nm-device.c b/src/devices/nm-device.c
index 00f886bd3d..23f6d46935 100644
--- a/src/devices/nm-device.c
+++ b/src/devices/nm-device.c
@@ -959,7 +959,7 @@ nm_device_release_one_slave (NMDevice *self, NMDevice *slave, gboolean configure
 	}
 
 	if (!configure) {
-		g_warn_if_fail (reason == NM_DEVICE_STATE_REASON_NONE);
+		g_warn_if_fail (reason == NM_DEVICE_STATE_REASON_NONE || reason == NM_DEVICE_STATE_REASON_REMOVED);
 		reason = NM_DEVICE_STATE_REASON_NONE;
 	} else if (reason == NM_DEVICE_STATE_REASON_NONE) {
 		g_warn_if_reached ();