diff --git a/model/generalsortfiltermodel.cpp b/model/generalsortfiltermodel.cpp
index 1dd5cf3..7f4d7a4 100644
--- a/model/generalsortfiltermodel.cpp
+++ b/model/generalsortfiltermodel.cpp
@@ -59,6 +59,12 @@ bool GeneralSortFilterModel::lessThan(const QModelIndex& source_left,
     const QString rightString = rightData.toString();
     return m_collator.compare(leftString, rightString) > 0;
   }
+  const bool isType = TYPE_ROLES.contains(role);
+  if (isType) {
+    const QString leftString  = leftData.toString();
+    const QString rightString = rightData.toString();
+    return m_collator.compare(leftString, rightString) > 0;
+  }
   const bool isInt = INT_ROLES.contains(role);
   if (isInt) {
     const int leftInt  = leftData.toInt();