diff --git a/weed/s3api/s3api_object_handlers_copy.go b/weed/s3api/s3api_object_handlers_copy.go
index 8e9c1090e..abec42af9 100644
--- a/weed/s3api/s3api_object_handlers_copy.go
+++ b/weed/s3api/s3api_object_handlers_copy.go
@@ -367,7 +367,8 @@ func (s3a *S3ApiServer) CopyObjectHandler(w http.ResponseWriter, r *http.Request
 	// to preserve the encryption header filtering. Fixes GitHub #7562.
 	processedMetadata, tagErr := processMetadataBytes(r.Header, dstEntry.Extended, replaceMeta, replaceTagging)
 	if tagErr != nil {
-		s3err.WriteErrorResponse(w, r, s3err.ErrInvalidCopySource)
+		glog.Errorf("CopyObjectHandler ValidateTags error %s: %v", r.URL, tagErr)
+		s3err.WriteErrorResponse(w, r, s3err.ErrInvalidTag)
 		return
 	}