diff --git a/pkg/client/fake.go b/pkg/client/fake.go
index 5105b2f883..603a63b76c 100644
--- a/pkg/client/fake.go
+++ b/pkg/client/fake.go
@@ -589,9 +589,11 @@ func (c *fakeUnderlayClient) PatchReactionFunc(action *testing.PatchActionImpl)
 		if err := yaml.Unmarshal(action.GetPatch(), &patchObj.Object); err != nil {
 			return true, nil, fmt.Errorf("error decoding YAML: %w", err)
 		}
-		if _, err := manager.Apply(obj, patchObj, "tidb-operator", true); err != nil {
+		ret, err := manager.Apply(obj, patchObj, "tidb-operator", true)
+		if err != nil {
 			return true, nil, err
 		}
+		obj = ret
 
 	default:
 		return true, nil, fmt.Errorf("PatchType is not supported")