diff --git a/weed/filesys/reader_at.go b/weed/filesys/reader_at.go
index c9872b796..c95b6cdb9 100644
--- a/weed/filesys/reader_at.go
+++ b/weed/filesys/reader_at.go
@@ -104,7 +104,7 @@ func (c *ChunkReadAt) doReadAt(p []byte, offset int64) (n int, err error) {
 
 func (c *ChunkReadAt) fetchChunkData(chunkView *filer2.ChunkView) ([]byte, error) {
 
-	fmt.Printf("fetching %s [%d,%d)\n", chunkView.FileId, chunkView.LogicOffset, chunkView.LogicOffset+int64(chunkView.Size))
+	// fmt.Printf("fetching %s [%d,%d)\n", chunkView.FileId, chunkView.LogicOffset, chunkView.LogicOffset+int64(chunkView.Size))
 
 	chunkData := c.chunkCache.GetChunk(chunkView.FileId)
 	if chunkData != nil {