diff --git a/apps/dolphin/src/dolphinmodel.cpp b/apps/dolphin/src/dolphinmodel.cpp
index d215729..1ee2fb0 100644
--- a/apps/dolphin/src/dolphinmodel.cpp
+++ b/apps/dolphin/src/dolphinmodel.cpp
@@ -403,9 +403,9 @@ QVariant DolphinModel::sortRoleData(const QModelIndex& index) const
 
     case KDirModel::Type:
         if (item.isDir())
-            retVariant = QString(); // when sorting we want folders to be placed first
+            retVariant = -1; // when sorting we want folders to be placed first
         else
-            retVariant = item.mimeComment();
+            retVariant = item.determineMimeType()->offset();
         break;
 
 #ifdef HAVE_NEPOMUK