diff --git a/common/io/buffered_writer.go b/common/io/buffered_writer.go
index 8f542e0f9..2d0a663ec 100644
--- a/common/io/buffered_writer.go
+++ b/common/io/buffered_writer.go
@@ -3,8 +3,6 @@ package io
 import (
 	"io"
 	"sync"
-
-	"fmt"
 	"v2ray.com/core/common/alloc"
 )
 
@@ -53,8 +51,6 @@ func (this *BufferedWriter) Write(b []byte) (int, error) {
 		return 0, io.ErrClosedPipe
 	}
 
-	fmt.Printf("BufferedWriter writing: %v\n", b)
-
 	if !this.cached {
 		return this.writer.Write(b)
 	}
@@ -62,7 +58,6 @@ func (this *BufferedWriter) Write(b []byte) (int, error) {
 	if this.buffer.IsFull() {
 		this.FlushWithoutLock()
 	}
-	fmt.Printf("BufferedWriter content: %v\n", this.buffer.Value)
 	return nBytes, nil
 }
 
@@ -78,11 +73,9 @@ func (this *BufferedWriter) Flush() error {
 }
 
 func (this *BufferedWriter) FlushWithoutLock() error {
-	fmt.Println("BufferedWriter flushing")
 	defer this.buffer.Clear()
 	for !this.buffer.IsEmpty() {
 		nBytes, err := this.writer.Write(this.buffer.Value)
-		fmt.Printf("BufferedWriting flushed %d bytes.\n", nBytes)
 		if err != nil {
 			return err
 		}