diff --git a/weed/server/volume_server.go b/weed/server/volume_server.go
index 0e49af4a9..dcd27673c 100644
--- a/weed/server/volume_server.go
+++ b/weed/server/volume_server.go
@@ -23,7 +23,6 @@ type VolumeServer struct {
 	inFlightDownloadDataSize      int64
 	concurrentUploadLimit         int64
 	concurrentDownloadLimit       int64
-	inFlightUploadDataLimitCond   *sync.Cond
 	inFlightDownloadDataLimitCond *sync.Cond
 
 	SeedMasterNodes []pb.ServerAddress
diff --git a/weed/server/volume_server_handlers.go b/weed/server/volume_server_handlers.go
index cba2a7601..1ff0914a9 100644
--- a/weed/server/volume_server_handlers.go
+++ b/weed/server/volume_server_handlers.go
@@ -61,7 +61,6 @@ func (vs *VolumeServer) privateStoreHandler(w http.ResponseWriter, r *http.Reque
 		atomic.AddInt64(&vs.inFlightUploadDataSize, contentLength)
 		defer func() {
 			atomic.AddInt64(&vs.inFlightUploadDataSize, -contentLength)
-			vs.inFlightUploadDataLimitCond.Signal()
 		}()
 
 		// processs uploads