diff --git a/djangocms_forms/forms.py b/djangocms_forms/forms.py
index 7ce8e5e..fb0b6cf 100644
--- a/djangocms_forms/forms.py
+++ b/djangocms_forms/forms.py
@@ -320,6 +320,10 @@ class FormBuilder(forms.Form):
                 contacts.append(data['value'])
 
             # Simple antispam
+            if data['name'] == 'comment' and (data['value'].find('http://') > -1 or data['value'].find('www.') > -1):
+                request.session[form_slug] = None
+                return
+
             if data['name'] == 'phone' and data['value'] in ['4955331826', '123456']:
                 request.session[form_slug] = None
                 return