diff --git a/abonapp/templates/abonapp/editAbon.html b/abonapp/templates/abonapp/editAbon.html
index 42ba153..5f311fb 100644
--- a/abonapp/templates/abonapp/editAbon.html
+++ b/abonapp/templates/abonapp/editAbon.html
@@ -32,7 +32,7 @@
                             </div>
                         </div>
 
-                        <div class="form-group-sm">
+                        <div class="form-group-sm{% if is_bad_ip %} has-error{% endif %}">
                             <label for="id_ip" class="col-sm-4 control-label">{% trans 'Ip Address' %}</label>
                             <div class="col-sm-8">
                                 <input type="text" value="{{ ip|default:'' }}" class="form-control" name="ip" placeholder="{% trans 'Not assigned' %}" pattern="^(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$"{% if abon.opt82 %} disabled{% endif %}/>