diff --git a/.header.txt b/.header.txt
index 477533e..a724058 100644
--- a/.header.txt
+++ b/.header.txt
@@ -1,11 +1,11 @@
 Copyright (c) {{.Year}}, {{.Owner}}
- 
+
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at
- 
+
     http://www.apache.org/licenses/LICENSE-2.0
- 
+
 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
diff --git a/util/net.go b/util/net.go
index 4e5dbc2..15082f9 100644
--- a/util/net.go
+++ b/util/net.go
@@ -1,11 +1,11 @@
 // Copyright (c) 2014, B3log
-//  
+// 
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
-//  
+// 
 //     http://www.apache.org/licenses/LICENSE-2.0
-//  
+// 
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
diff --git a/util/utf8reader.go b/util/utf8reader.go
index 6a9509d..5fe66a8 100644
--- a/util/utf8reader.go
+++ b/util/utf8reader.go
@@ -1,18 +1,17 @@
 // Copyright (c) 2014, B3log
-//  
+//
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
-//  
+//
 //     http://www.apache.org/licenses/LICENSE-2.0
-//  
+//
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-//部分代码参考(Ctrl+c)自golang bufio
 package util
 
 import (