diff --git a/src/tree.c b/src/tree.c
index ac61cd8..a979d8a 100644
--- a/src/tree.c
+++ b/src/tree.c
@@ -551,8 +551,6 @@ zenity_tree (ZenityData *data, ZenityTreeData *tree_data)
     column_index++;
   }
 
-  gtk_tree_view_set_rules_hint (GTK_TREE_VIEW (tree_view), TRUE);
-
   if (tree_data->hide_header)
     gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (tree_view), FALSE);