diff --git a/jsoninspector.glade b/jsoninspector.glade
index ca0a47a..e7d7f17 100644
--- a/jsoninspector.glade
+++ b/jsoninspector.glade
@@ -104,6 +104,7 @@
                 <property name="expander_column">treeviewcolumn1</property>
                 <property name="search_column">0</property>
                 <property name="level_indentation">1</property>
+                <property name="enable_grid_lines">both</property>
                 <child>
                   <object class="GtkTreeViewColumn" id="treeviewcolumn1">
                     <property name="resizable">True</property>