diff --git a/CHANGELOG.md b/CHANGELOG.md
index 05d71682..97fa7111 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # developing
 
-- Add: Convenient way to generate mock object [4620](https://github.com/beego/beego/issues/4397)
+- Add: Convenient way to generate mock object [4620](https://github.com/beego/beego/issues/4620)
 - Infra: use dependabot to update dependencies. [4623](https://github.com/beego/beego/pull/4623)
 - Lint: use golangci-lint. [4619](https://github.com/beego/beego/pull/4619)
 - Chore: format code. [4615](https://github.com/beego/beego/pull/4615)
diff --git a/core/bean/mock.go b/core/bean/mock.go
index 707d875e..0a8d3e29 100644
--- a/core/bean/mock.go
+++ b/core/bean/mock.go
@@ -78,7 +78,7 @@ func mock(pv reflect.Value) (err error) {
 
 // mock slice value
 func mockSlice(tagValue string, pvv reflect.Value) (err error) {
-	if len(tagValue) == 0 {
+	if tagValue == "" {
 		return
 	}
 	sliceMetas := strings.Split(tagValue, ":")