diff --git a/src/plugins/qmldesigner/designercore/uniquename.cpp b/src/plugins/qmldesigner/designercore/uniquename.cpp
index d7506164dbe..0948e9155e2 100644
--- a/src/plugins/qmldesigner/designercore/uniquename.cpp
+++ b/src/plugins/qmldesigner/designercore/uniquename.cpp
@@ -147,6 +147,9 @@ QString generatePath(const QString &path)
  */
 QString generateId(const QString &id, std::function<bool(const QString &)> predicate)
 {
+    if (id.isEmpty())
+        return {};
+
     // remove non word (non A-Z, a-z, 0-9) or space characters
     QString newId = id.trimmed();