diff --git a/cmd/hz/generator/package_tpl.go b/cmd/hz/generator/package_tpl.go
index 7f72b9b91..a03e27824 100644
--- a/cmd/hz/generator/package_tpl.go
+++ b/cmd/hz/generator/package_tpl.go
@@ -29,7 +29,7 @@ var (
 	idlClientName           = "idl_client.go"   // client of service for quick call
 
 	insertPointNew        = "//INSERT_POINT: DO NOT DELETE THIS LINE!"
-	insertPointPatternNew = `//INSERT_POINT\: DO NOT DELETE THIS LINE\!`
+	insertPointPatternNew = `//\s?INSERT_POINT\: DO NOT DELETE THIS LINE\!`
 )
 
 var templateNameSet = map[string]string{
diff --git a/cmd/hz/generator/package_tpl_test.go b/cmd/hz/generator/package_tpl_test.go
new file mode 100644
index 000000000..9252a5329
--- /dev/null
+++ b/cmd/hz/generator/package_tpl_test.go
@@ -0,0 +1,93 @@
+/*
+ * Copyright 2022 CloudWeGo Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package generator
+
+import (
+	"regexp"
+	"testing"
+)
+
+func TestMatchInsertPointPatternNew(t *testing.T) {
+	reg := regexp.MustCompile(insertPointPatternNew)
+
+	ValidPatternFunc := func(s string) bool {
+		subIndexReg := reg.FindSubmatchIndex([]byte(s))
+		if len(subIndexReg) != 2 || subIndexReg[0] < 1 {
+			return false
+		}
+		return true
+	}
+
+	type args struct {
+		name        string
+		fileContent string
+	}
+	tests := []struct {
+		name      string
+		args      args
+		WantValid bool
+	}{
+		{"TestInsertPointPatternNoSpace", args{"test", `// Code generated by hertz generator. DO NOT EDIT.
+
+package router
+
+import (
+	admin "demo/biz/router/admin"
+	"github.com/cloudwego/hertz/pkg/app/server"
+)
+
+// GeneratedRegister registers routers generated by IDL.
+func GeneratedRegister(r *server.Hertz) {
+	//INSERT_POINT: DO NOT DELETE THIS LINE!
+	admin.Register(r)
+}`}, true},
+		{"TestInsertPointPatternHasSpace", args{"test", `// Code generated by hertz generator. DO NOT EDIT.
+
+package router
+
+import (
+	admin "demo/biz/router/admin"
+	"github.com/cloudwego/hertz/pkg/app/server"
+)
+
+// GeneratedRegister registers routers generated by IDL.
+func GeneratedRegister(r *server.Hertz) {
+	// INSERT_POINT: DO NOT DELETE THIS LINE!
+	admin.Register(r)
+}`}, true},
+		{"TestInsertPointPatternWrongFormat", args{"test", `// Code generated by hertz generator. DO NOT EDIT.
+
+package router
+
+import (
+	admin "demo/biz/router/admin"
+	"github.com/cloudwego/hertz/pkg/app/server"
+)
+
+// GeneratedRegister registers routers generated by IDL.
+func GeneratedRegister(r *server.Hertz) {
+	admin.Register(r)
+}`}, false},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := ValidPatternFunc(tt.args.fileContent); got != tt.WantValid {
+				t.Errorf("wrong format %s: insert-point '%s' not found", tt.args.fileContent, insertPointNew)
+			}
+		})
+	}
+}
diff --git a/cmd/hz/generator/router.go b/cmd/hz/generator/router.go
index 10f431657..42b186efe 100644
--- a/cmd/hz/generator/router.go
+++ b/cmd/hz/generator/router.go
@@ -327,7 +327,7 @@ func (pkgGen *HttpPackageGenerator) updateRegister(pkg, rDir, pkgName string) er
 
 		subIndexReg := regRegisterV3.FindSubmatchIndex(file)
 		if len(subIndexReg) != 2 || subIndexReg[0] < 1 {
-			return fmt.Errorf("wrong format %s: insert-point '%s' not found", string(file), insertPointPatternNew)
+			return fmt.Errorf("wrong format %s: insert-point '%s' not found", string(file), insertPointNew)
 		}
 
 		bufReg := bytes.NewBuffer(nil)