diff --git a/common/xfer/websocket.go b/common/xfer/websocket.go
index 4778d9c85..3df3a533f 100644
--- a/common/xfer/websocket.go
+++ b/common/xfer/websocket.go
@@ -172,5 +172,6 @@ func IsExpectedWSCloseError(err error) bool {
 		websocket.CloseNormalClosure,
 		websocket.CloseGoingAway,
 		websocket.CloseNoStatusReceived,
+		websocket.CloseAbnormalClosure,
 	)
 }