client.go | 3 ++-

diff --git a/client.go b/client.go
index d2ebfbcd71500747cc568ed3c3849ce12de23e7b..7230118bb060203c3918ec63e8c5ce0825b6ee33 100644
--- a/client.go
+++ b/client.go
@@ -1566,7 +1566,8 @@ 				req.Event = tracker.None
 				continue newAnnounce
 			}
 		}
-		time.Sleep(5 * time.Second)
+		// Couldn't announce at all. Wait a bit before trying again.
+		time.Sleep(15 * time.Second)
 	}
 }