diff --git a/weed/command/mount.go b/weed/command/mount.go
index 0912a51ba..613066951 100644
--- a/weed/command/mount.go
+++ b/weed/command/mount.go
@@ -1,9 +1,9 @@
 package command
 
 import (
-	"strings"
 	"fmt"
 	"strconv"
+	"strings"
 )
 
 type MountOptions struct {
diff --git a/weed/command/mount_std.go b/weed/command/mount_std.go
index 8f4d8dc36..92dcc9008 100644
--- a/weed/command/mount_std.go
+++ b/weed/command/mount_std.go
@@ -60,7 +60,7 @@ func runMount(cmd *Command, args []string) bool {
 
 	mountRoot := *mountOptions.filerMountRootPath
 	if mountRoot != "/" && strings.HasSuffix(mountRoot, "/") {
-		mountRoot = mountRoot[0: len(mountRoot)-1]
+		mountRoot = mountRoot[0 : len(mountRoot)-1]
 	}
 
 	err = fs.Serve(c, filesys.NewSeaweedFileSystem(&filesys.Option{
diff --git a/weed/filesys/wfs.go b/weed/filesys/wfs.go
index 423ec54e4..9b1b98ebf 100644
--- a/weed/filesys/wfs.go
+++ b/weed/filesys/wfs.go
@@ -34,7 +34,7 @@ type WFS struct {
 
 func NewSeaweedFileSystem(option *Option) *WFS {
 	return &WFS{
-		option:                    option,
+		option: option,
 		listDirectoryEntriesCache: ccache.New(ccache.Configure().MaxSize(6000).ItemsToPrune(100)),
 		pathToHandleIndex:         make(map[string]int),
 	}
diff --git a/weed/s3api/s3api_errors.go b/weed/s3api/s3api_errors.go
index 2a86595fb..e5ce8df5a 100644
--- a/weed/s3api/s3api_errors.go
+++ b/weed/s3api/s3api_errors.go
@@ -26,7 +26,7 @@ type ErrorCode int
 
 // Error codes, see full list at http://docs.aws.amazon.com/AmazonS3/latest/API/ErrorResponses.html
 const (
-	ErrNone                    ErrorCode = iota
+	ErrNone ErrorCode = iota
 	ErrMethodNotAllowed
 	ErrBucketNotEmpty
 	ErrBucketAlreadyExists
diff --git a/weed/s3api/s3api_object_handlers.go b/weed/s3api/s3api_object_handlers.go
index 6c1895cbc..a9be99d2f 100644
--- a/weed/s3api/s3api_object_handlers.go
+++ b/weed/s3api/s3api_object_handlers.go
@@ -5,9 +5,9 @@ import (
 	"fmt"
 	"github.com/chrislusf/seaweedfs/weed/glog"
 	"github.com/gorilla/mux"
+	"io"
 	"io/ioutil"
 	"net/http"
-	"io"
 )
 
 var (
diff --git a/weed/s3api/s3api_objects_list_handlers.go b/weed/s3api/s3api_objects_list_handlers.go
index 6699ccd0c..46a623202 100644
--- a/weed/s3api/s3api_objects_list_handlers.go
+++ b/weed/s3api/s3api_objects_list_handlers.go
@@ -1,17 +1,17 @@
 package s3api
 
 import (
+	"context"
+	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/filer2"
+	"github.com/chrislusf/seaweedfs/weed/glog"
+	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
 	"github.com/gorilla/mux"
 	"net/http"
 	"net/url"
-	"strconv"
-	"github.com/chrislusf/seaweedfs/weed/glog"
-	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
-	"context"
-	"fmt"
 	"path/filepath"
+	"strconv"
 	"time"
-	"github.com/chrislusf/seaweedfs/weed/filer2"
 )
 
 const (
diff --git a/weed/s3api/s3api_server.go b/weed/s3api/s3api_server.go
index 463f6e156..f5748da09 100644
--- a/weed/s3api/s3api_server.go
+++ b/weed/s3api/s3api_server.go
@@ -37,7 +37,7 @@ func (s3a *S3ApiServer) registerRouter(router *mux.Router) {
 	apiRouter := router.PathPrefix("/").Subrouter()
 	var routers []*mux.Router
 	if s3a.option.DomainName != "" {
-		routers = append(routers, apiRouter.Host("{bucket:.+}." + s3a.option.DomainName).Subrouter())
+		routers = append(routers, apiRouter.Host("{bucket:.+}."+s3a.option.DomainName).Subrouter())
 	}
 	routers = append(routers, apiRouter.PathPrefix("/{bucket}").Subrouter())