diff --git a/addons/mass_mailing/data/ir_config_parameter_data.xml b/addons/mass_mailing/data/ir_config_parameter_data.xml
index 531c0854ad9..bcce9a8c9df 100644
--- a/addons/mass_mailing/data/ir_config_parameter_data.xml
+++ b/addons/mass_mailing/data/ir_config_parameter_data.xml
@@ -5,5 +5,9 @@
         <function model="ir.config_parameter"
                   name="set_param"
                   eval="('mass_mailing.mass_mailing_reports', 'True')"/>
+        <!-- Display blacklist button to customers on portal page -->
+        <function model="ir.config_parameter"
+                  name="set_param"
+                  eval="('mass_mailing.show_blacklist_buttons', True)"/>
     </data>
 </odoo>