diff --git a/frontend-js/src/main/js/gui/admin/AddProjectDialog.js b/frontend-js/src/main/js/gui/admin/AddProjectDialog.js
index e0047f3fae3a9ece3fa129fcfa53a3a69d74ee15..c6e086e5a28487dd3f42f2d7b3827ccb17d0f22c 100644
--- a/frontend-js/src/main/js/gui/admin/AddProjectDialog.js
+++ b/frontend-js/src/main/js/gui/admin/AddProjectDialog.js
@@ -1255,11 +1255,13 @@ AddProjectDialog.prototype.setZipEntries = function (entries) {
 
 AddProjectDialog.prototype.isIgnoredZipEntry = function (filename) {
   var lowercaseString = filename.toLowerCase();
-  if (lowercaseString.startsWith("__macosx") || lowercaseString.startsWith(".ds_store")) {
+  // noinspection SpellCheckingInspection
+  if (lowercaseString.indexOf("__macosx") === 0) {
+    return true;
+  } else if (lowercaseString.indexOf(".ds_store") === 0) {
     return true;
-  } else {
-    return false;
   }
+  return false;
 };
 
 AddProjectDialog.prototype.getEntryByFilename = function (filename) {