diff --git a/addons/plugin_outlook/plugin_outlook.xml b/addons/plugin_outlook/plugin_outlook.xml
index e01907d1745..e90b276c299 100644
--- a/addons/plugin_outlook/plugin_outlook.xml
+++ b/addons/plugin_outlook/plugin_outlook.xml
@@ -11,7 +11,9 @@
                         <attribute name="string">Install Outlook Plug-In</attribute>
                     </form>
                     <xpath expr="//footer" position="replace">
-                        <button string="Close" class="oe_link" special="cancel" />
+                       <footer>
+                            <button string="Close" class="oe_link" special="cancel" />
+                       </footer>
                     </xpath>
                     <xpath expr="//separator[@string='title']" position="after" version="7.0">
                         <group>
diff --git a/addons/plugin_thunderbird/plugin_thunderbird.xml b/addons/plugin_thunderbird/plugin_thunderbird.xml
index bb24a0b5957..963e8004ce5 100644
--- a/addons/plugin_thunderbird/plugin_thunderbird.xml
+++ b/addons/plugin_thunderbird/plugin_thunderbird.xml
@@ -11,7 +11,9 @@
                         <attribute name="string">Install Thunderbird Plug-In</attribute>
                     </form>
                     <xpath expr="//footer" position="replace">
-                        <button string="Close" class="oe_link" special="cancel" />
+                       <footer>
+                            <button string="Close" class="oe_link" special="cancel" />
+                       </footer>
                     </xpath>
                     <xpath expr="//separator[@string='title']" position="after">
                         <group>