diff --git a/django_select2/widgets.py b/django_select2/widgets.py
index d888080..b63ece4 100644
--- a/django_select2/widgets.py
+++ b/django_select2/widgets.py
@@ -127,6 +127,12 @@ class Select2Mixin(object):
 
                 There are other such intricacies, based on which some options are removed. By enforcing this
                 restriction we make sure to not break the code by passing some wrong concotion of options.
+                
+            .. tip:: According to the select2 documentation, in order to get the ``placeholder`` and ``allowClear`` 
+                settings working, you have to specify an empty ``<option></option>`` as the first entry in your 
+                ``<select>`` list. Otherwise the field will be rendered without a placeholder and the clear feature
+                will stay disabled.
+                
 
         :type select2_options: :py:obj:`dict` or None