diff --git a/transport/http2_client.go b/transport/http2_client.go
index c9c8910b..5d4a8c4b 100644
--- a/transport/http2_client.go
+++ b/transport/http2_client.go
@@ -636,6 +636,7 @@ func (t *http2Client) handleRSTStream(f *http2.RSTStreamFrame) {
 	s.statusCode, ok = http2ErrConvTab[http2.ErrCode(f.ErrCode)]
 	if !ok {
 		grpclog.Println("transport: http2Client.handleRSTStream found no mapped gRPC status for the received http2 error ", f.ErrCode)
+		s.statusCode = codes.Unknown
 	}
 	s.mu.Unlock()
 	s.write(recvMsg{err: io.EOF})
diff --git a/transport/http_util.go b/transport/http_util.go
index 73c12d5f..7a3594ac 100644
--- a/transport/http_util.go
+++ b/transport/http_util.go
@@ -69,6 +69,7 @@ var (
 		http2.ErrCodeInternal:           codes.Internal,
 		http2.ErrCodeFlowControl:        codes.ResourceExhausted,
 		http2.ErrCodeSettingsTimeout:    codes.Internal,
+		http2.ErrCodeStreamClosed:       codes.Internal,
 		http2.ErrCodeFrameSize:          codes.Internal,
 		http2.ErrCodeRefusedStream:      codes.Unavailable,
 		http2.ErrCodeCancel:             codes.Canceled,