diff --git a/index.html b/index.html
index 12d2f6c5..0c6c1baa 100755
--- a/index.html
+++ b/index.html
@@ -623,6 +623,9 @@ $("#e14_destroy").click(function() { $("#e14").select2("destroy"); });
                         only
                         available when the placeholder is specified.
                     </p>
+                    <p class="alert alert-warning">When attached to a <code>select</code> an <code>option</code> with an empty value must be provided.
+                        This is the option that will be selected when the button is pressed since a select box requires
+                        at least one selection <code>option</code>.</p>
 
                     <p>
                         Also, note that this option only works with
diff --git a/select2-latest.html b/select2-latest.html
index 8e00d1cf..e77acb29 100755
--- a/select2-latest.html
+++ b/select2-latest.html
@@ -675,7 +675,9 @@ $("#e16_disable").click(function() { $("#e16,#e16_2").select2("disable"); });
                         only
                         available when the placeholder is specified.
                     </p>
-
+                    <p class="alert alert-warning">When attached to a <code>select</code> an <code>option</code> with an empty value must be provided.
+                        This is the option that will be selected when the button is pressed since a select box requires
+                        at least one selection <code>option</code>.</p>
                     <p>
                         Also, note that this option only works with
                         non-multi-value based selects because multi-value selects always provide such a button for every