diff --git a/core/api.go b/core/api.go
index f7ac026..c5fcfdc 100644
--- a/core/api.go
+++ b/core/api.go
@@ -397,7 +397,7 @@ func (caller apiCaller) configAPI(w http.ResponseWriter, r *http.Request) error
 	return nil
 }
 
-func (caller apicaller) lockcreatecharAPI(w http.ResponseWriter, r *http.Request) error {
+func (caller apiCaller) lockcreatecharAPI(w http.ResponseWriter, r *http.Request) error {
 	mg, err := caller.mg.mongoClient.FindAll(CollectionService, bson.M{})
 	if err != nil {
 		return err