diff --git a/properties/nm-l2tp-dialog.ui b/properties/nm-l2tp-dialog.ui
index 32c5314ac55ad2c1ca20e842b1e39a3eb12be421..76a2a4e6ea873e399ff57e71c0619c16a02ca4a4 100644
--- a/properties/nm-l2tp-dialog.ui
+++ b/properties/nm-l2tp-dialog.ui
@@ -111,7 +111,9 @@
                             <property name="visible">True</property>
                             <property name="can_focus">True</property>
                             <property name="hscrollbar_policy">never</property>
+                            <property name="vscrollbar_policy">automatic</property>
                             <property name="shadow_type">in</property>
+                            <property name="height_request">120</property>
                             <child>
                               <object class="GtkTreeView" id="ppp_auth_methods">
                                 <property name="visible">True</property>