diff --git a/lib/TrackingStatus.lib.php b/lib/TrackingStatus.lib.php
index bb5179e..a209b8e 100644
--- a/lib/TrackingStatus.lib.php
+++ b/lib/TrackingStatus.lib.php
@@ -186,6 +186,7 @@ class TrackingStatus {
             case "MF": // "Processed through Facility" (int'l)
             case "DG": // "Out for Delivery" (int'l)
             case "ME": // "Held in Customs" (int'l, isn't necessarily bad)
+            case "TL": // "moving within the USPS network" filler message
                 return TrackingStatus::TRACKING_STATUS_TRANSIT;
             case "01":
             case "13":