diff --git a/addons/account/security/account_security.xml b/addons/account/security/account_security.xml
index 89009e9d..c4d23466 100644
--- a/addons/account/security/account_security.xml
+++ b/addons/account/security/account_security.xml
@@ -11,16 +11,17 @@
     <record id="group_account_user" model="res.groups">
         <field name="name">Show Full Accounting Features</field>
         <field name="category_id" ref="base.module_category_hidden"/>
+        <field name="implied_ids" eval="[(4, ref('group_account_invoice'))]"/>
     </record>
 
     <record id="group_account_manager" model="res.groups">
         <field name="name">Billing Manager</field>
         <field name="category_id" ref="base.module_category_accounting_and_finance"/>
-        <field name="implied_ids" eval="[(4, ref('group_account_invoice'))]"/>
+        <field name="implied_ids" eval="[(4, ref('group_account_invoice')), (4, ref('group_account_user'))]"/>
     </record>
 
     <record id="base.user_root" model="res.users">
-        <field name="groups_id" eval="[(4, ref('account.group_account_invoice')), (4, ref('account.group_account_manager'))]"/>
+        <field name="groups_id" eval="[(4, ref('account.group_account_invoice')), (4, ref('account.group_account_manager')), (4, ref('group_account_user'))]"/>
     </record>
 
     <record id="base.group_system" model="res.groups">