diff --git a/trytond/res/ir.xml b/trytond/res/ir.xml
index 9ee2da05ac..ff6509e5e0 100644
--- a/trytond/res/ir.xml
+++ b/trytond/res/ir.xml
@@ -408,37 +408,37 @@ this repository contains the full copyright notices and license terms. -->
                             expr="/form/group/button[@name="button_install"]"
                             position="replace">
                             <button string="Mark for Installation" name="button_install"
-                                type="object" states="{'invisible': '''state != 'uninstalled' ''', 'readonly': ''' %(res.group_admin)d not in groups '''}"/>
+                                type="object" states="{'invisible': '''state != 'uninstalled' ''', 'readonly': '''%(res.group_admin)d not in groups'''}"/>
                         </xpath>
                         <xpath
                             expr="/form/group/button[@name=&quot;button_install_cancel&quot;]"
                             position="replace">
                             <button string="Cancel Installation" name="button_install_cancel"
-                                type="object" states="{'invisible': '''state != 'to install' ''', 'readonly': ''' %(res.group_admin)d not in groups '''}"/>
+                                type="object" states="{'invisible': '''state != 'to install' ''', 'readonly': '''%(res.group_admin)d not in groups'''}"/>
                         </xpath>
                         <xpath
                             expr="/form/group/button[@name=&quot;button_uninstall&quot;]"
                             position="replace">
                             <button string="Mark for Uninstallation (beta)" name="button_uninstall"
-                                type="object" states="{'invisible': '''state != 'installed' ''', 'readonly': ''' %(res.group_admin)d not in groups or True'''}"/>
+                                type="object" states="{'invisible': '''state != 'installed' ''', 'readonly': '''%(res.group_admin)d not in groups or True'''}"/>
                         </xpath>
                         <xpath
                             expr="/form/group/button[@name=&quot;button_uninstall_cancel&quot;]"
                             position="replace">
                             <button string="Cancel Uninstallation" name="button_uninstall_cancel"
-                                type="object" states="{'invisible': '''state != 'to remove' ''', 'readonly': ''' %(res.group_admin)d not in groups '''}"/>
+                                type="object" states="{'invisible': '''state != 'to remove' ''', 'readonly': '''%(res.group_admin)d not in groups'''}"/>
                         </xpath>
                         <xpath
                             expr="/form/group/button[@name=&quot;button_upgrade&quot;]"
                             position="replace">
                             <button string="Mark for Upgrade" name="button_upgrade"
-                                type="object" states="{'invisible': '''state != 'installed' ''', 'readonly': ''' %(res.group_admin)d not in groups '''}"/>
+                                type="object" states="{'invisible': '''state != 'installed' ''', 'readonly': '''%(res.group_admin)d not in groups'''}"/>
                         </xpath>
                         <xpath
                             expr="/form/group/button[@name=&quot;button_upgrade_cancel&quot;]"
                             position="replace">
                             <button string="Cancel Upgrade" name="button_upgrade_cancel"
-                                type="object" states="{'invisible': '''state != 'to upgrade' ''', 'readonly': ''' %(res.group_admin)d not in groups '''}"/>
+                                type="object" states="{'invisible': '''state != 'to upgrade' ''', 'readonly': '''%(res.group_admin)d not in groups'''}"/>
                         </xpath>
                     </data>
                 ]]>