title: Select a Valid Choice. 0 is not one of the available choices
body: <pre><code>TYPE1 = 0
  TYPE2 = 1
  
  OPEN_TYPES = (
      (TYPE1, _(u"Test")),
      (TYPE2, _(u"Test2")),
  )
  </code></pre>
  
  <p>models:</p>
  
  <pre><code>models.CharField(max_length=10, choices=OPEN_TYPES)
  </code></pre>
  
  <p>I have this error if I try to add object in admin panel:</p>
  
  <blockquote>
    <p>Select a Valid Choice. 0 is not one of the available choices</p>
  </blockquote>
  
  <p>How to fix it?</p>