diff --git a/net/ghttp/ghttp_request_param_request.go b/net/ghttp/ghttp_request_param_request.go
index a2874d9de92..601e3f06a92 100644
--- a/net/ghttp/ghttp_request_param_request.go
+++ b/net/ghttp/ghttp_request_param_request.go
@@ -183,7 +183,7 @@ func (r *Request) doGetRequestStruct(pointer interface{}, mapping ...map[string]
 		return data, nil
 	}
 	// `in` Tag Struct values.
-	if err = r.mergeInTagStructValue(data, pointer); err != nil {
+	if err = r.mergeInTagStructValue(data); err != nil {
 		return data, nil
 	}
 
@@ -239,7 +239,7 @@ func (r *Request) mergeDefaultStructValue(data map[string]interface{}, pointer i
 }
 
 // mergeInTagStructValue merges the request parameters with header or cookie values from struct `in` tag definition.
-func (r *Request) mergeInTagStructValue(data map[string]interface{}, pointer interface{}) error {
+func (r *Request) mergeInTagStructValue(data map[string]interface{}) error {
 	fields := r.serveHandler.Handler.Info.ReqStructFields
 	if len(fields) > 0 {
 		var (
diff --git a/net/ghttp/ghttp_server_service_handler.go b/net/ghttp/ghttp_server_service_handler.go
index 76de26aaae8..7e248c75c5e 100644
--- a/net/ghttp/ghttp_server_service_handler.go
+++ b/net/ghttp/ghttp_server_service_handler.go
@@ -282,20 +282,3 @@ func createRouterFunc(funcInfo handlerFuncInfo) func(r *Request) {
 		}
 	}
 }
-
-// trimGeneric removes type definitions string from response type name if generic
-func trimGeneric(structName string) string {
-	var (
-		leftBraceIndex  = strings.LastIndex(structName, "[") // for generic, it is faster to start at the end than at the beginning
-		rightBraceIndex = strings.LastIndex(structName, "]")
-	)
-	if leftBraceIndex == -1 || rightBraceIndex == -1 {
-		// not found '[' or ']'
-		return structName
-	} else if leftBraceIndex+1 == rightBraceIndex {
-		// may be a slice, because generic is '[X]', not '[]'
-		// to be compatible with bad return parameter type: []XxxRes
-		return structName
-	}
-	return structName[:leftBraceIndex]
-}