diff --git a/pkg/config/config.go b/pkg/config/config.go
index c66aebbd2..5e12c7c36 100644
--- a/pkg/config/config.go
+++ b/pkg/config/config.go
@@ -157,8 +157,7 @@ func getMergeConfigData(path string, data []byte) ([]byte, error) {
 			return nil, fmt.Errorf("failed to unmarshal config: %v", err)
 		}
 		if err := mergo.Merge(&configMap, &mergeConfigMap,
-			mergo.WithOverwriteWithEmptyValue, mergo.WithOverrideEmptySlice,
-			mergo.WithAppendSlice, mergo.WithTypeCheck, mergo.WithSliceDeepCopy,
+			mergo.WithOverwriteWithEmptyValue, mergo.WithTypeCheck,
 		); err != nil {
 			return nil, fmt.Errorf("merge: %v", err)
 		}