diff -ruN libqtlua-2.1/src/qtluatabletreemodel.cc libqtlua-2.1-new/src/qtluatabletreemodel.cc
--- libqtlua-2.1/src/qtluatabletreemodel.cc	2013-03-18 00:14:27.000000000 +0100
+++ libqtlua-2.1-new/src/qtluatabletreemodel.cc	2019-11-25 21:02:09.424920320 +0100
@@ -223,7 +223,7 @@
 
     TableTreeKeys *t = static_cast<TableTreeKeys*>(index.internalPointer());
 
-    Qt::ItemFlags res = (Qt::ItemFlag)(Qt::ItemIsEnabled | Qt::ItemIsSelectable);
+    QFlags<Qt::ItemFlag> res = Qt::ItemIsEnabled | Qt::ItemIsSelectable;
 
     if (t->_attr & Editable)
       {