diff --git a/addons/account/account_view.xml b/addons/account/account_view.xml
index b21c4239e3b..0681acddb42 100644
--- a/addons/account/account_view.xml
+++ b/addons/account/account_view.xml
@@ -110,7 +110,7 @@
 		                        <label for="date_start" string="Duration" />
 		                        <div>
 		                            <field name="date_start" class="oe_inline" nolabel="1"/> 
-		                            <span attr="{'invisible': [('date_stop','=',False)]}"> - </span> 
+		                            <span attrs="{'invisible': [('date_stop','=',False)]}"> - </span> 
 		                            <field name="date_stop" nolabel="1" class="oe_inline"/>
 		                        </div>
 		                    </group>