diff --git a/ext/custom-addons/dp_intercompany_invoicing/models/account.py b/ext/custom-addons/dp_intercompany_invoicing/models/account.py
index bee85fbc..0f788d6c 100644
--- a/ext/custom-addons/dp_intercompany_invoicing/models/account.py
+++ b/ext/custom-addons/dp_intercompany_invoicing/models/account.py
@@ -38,6 +38,12 @@ class AccountInvoice(models.Model):
 
     pg_ic_num = fields.Char('PG_IC_Nummer')
     pg_ic_flag = fields.Boolean(string='IC', help='Rechnung nach PG exportiert')
+    pg_admin = fields.Boolean(compute='_is_pg_admin', default=False, store=False)
+
+    @api.multi
+    def _is_pg_admin(self):
+        for record in self:
+            record.pg_admin = self.env.user.has_group('base.group_system')
 
     @api.multi
     def _compute_inter_company_supplier_isset(self):
diff --git a/ext/custom-addons/dp_intercompany_invoicing/views/account_views.xml b/ext/custom-addons/dp_intercompany_invoicing/views/account_views.xml
index 39e98c9f..be1f2dac 100644
--- a/ext/custom-addons/dp_intercompany_invoicing/views/account_views.xml
+++ b/ext/custom-addons/dp_intercompany_invoicing/views/account_views.xml
@@ -20,8 +20,9 @@
                     <button class="btn btn-primary" type="object" name="action_unset_all_wv_flag" string="Löschen"/>
                 </div>
                 <field name="reimburse_invoice_id" attrs="{'invisible':True}"/>
-                <field name="pg_ic_num"/>
-                <field name="pg_ic_flag"/>
+                <field name="pg_admin" attrs="{'invisible':True}"/>
+                <field name="pg_ic_num" attrs="{'readonly': [('pg_admin','=',False)]}"/>
+                <field name="pg_ic_flag" attrs="{'readonly': [('pg_admin','=',False)]}"/>
 <!--
                 <field name="pg_ic_flag" attrs="{'readonly':[('state','not in',('draft','sent'))]}"/>
 -->