diff --git a/server/wheelserver/common/types.go b/server/wheelserver/common/types.go
index 4b06609c..158d74cf 100644
--- a/server/wheelserver/common/types.go
+++ b/server/wheelserver/common/types.go
@@ -15,11 +15,11 @@ type App interface {
 	Run(func(), func())
 }
 
-type RouterMgr interface{
+type RouterMgr interface {
 }
 
-type ModelMgr interface{
+type ModelMgr interface {
 }
 
-type ServiceMgr interface{
+type ServiceMgr interface {
 }