diff --git a/ubl-settings-diskquota.glade b/ubl-settings-diskquota.glade
index 391c518..4bb2f06 100644
--- a/ubl-settings-diskquota.glade
+++ b/ubl-settings-diskquota.glade
@@ -2721,6 +2721,8 @@ translated and supported by community.</property>
   </object>
   <object class="GtkWindow" id="tableUserGroupWindow">
     <property name="can-focus">False</property>
+    <property name="resizable">False</property>
+    <property name="modal">True</property>
     <property name="default-width">250</property>
     <property name="default-height">400</property>
     <property name="icon-name">com.ublinux.ubl-settings-diskquota</property>