diff --git a/admin.go b/admin.go
index 715f6b3f..25606501 100644
--- a/admin.go
+++ b/admin.go
@@ -20,11 +20,10 @@ import (
 	"fmt"
 	"net/http"
 	"os"
+	"reflect"
 	"text/template"
 	"time"
 
-	"reflect"
-
 	"github.com/astaxie/beego/grace"
 	"github.com/astaxie/beego/logs"
 	"github.com/astaxie/beego/toolbox"
diff --git a/hooks.go b/hooks.go
index c5ec8e2d..b8671d35 100644
--- a/hooks.go
+++ b/hooks.go
@@ -11,7 +11,7 @@ import (
 	"github.com/astaxie/beego/session"
 )
 
-//
+// register MIME type with content type
 func registerMime() error {
 	for k, v := range mimemaps {
 		mime.AddExtensionType(k, v)
diff --git a/router.go b/router.go
index 5c78b42c..997b6854 100644
--- a/router.go
+++ b/router.go
@@ -133,14 +133,15 @@ type ControllerRegister struct {
 
 // NewControllerRegister returns a new ControllerRegister.
 func NewControllerRegister() *ControllerRegister {
-	cr := &ControllerRegister{
+	return &ControllerRegister{
 		routers:  make(map[string]*Tree),
 		policies: make(map[string]*Tree),
+		pool: sync.Pool{
+			New: func() interface{} {
+				return beecontext.NewContext()
+			},
+		},
 	}
-	cr.pool.New = func() interface{} {
-		return beecontext.NewContext()
-	}
-	return cr
 }
 
 // Add controller handler and pattern rules to ControllerRegister.
diff --git a/template.go b/template.go
index d673a54d..1e654dd8 100644
--- a/template.go
+++ b/template.go
@@ -361,6 +361,8 @@ type templateFSFunc func() http.FileSystem
 func defaultFSFunc() http.FileSystem {
 	return FileSystem{}
 }
+
+// SetTemplateFSFunc set default filesystem function
 func SetTemplateFSFunc(fnt templateFSFunc) {
 	beeTemplateFS = fnt
 }