client.go | 3 ++-

diff --git a/client.go b/client.go
index 179031d03e3a81b7b1bd21151a1769a05f9eb141..1efd98966182d4bbfe3f7a6504ad8790918c85fb 100644
--- a/client.go
+++ b/client.go
@@ -973,7 +973,8 @@ 	if c.needRequestUpdate != "" {
 		return
 	}
 	if c.actualRequestState.Requests.IsEmpty() {
-		panic("updateRequestsTimer should have been stopped")
+		// If there are no outstanding requests, then a request update should have already run.
+		return
 	}
 	c.updateRequests("updateRequestsTimer")
 }