Merge pull request #172 from pacahon/master

Fix #169 issue

model_utils/fields.py

@@ -231,7 +231,7 @@ class SplitField(models.TextField):
 
     def deconstruct(self):
         name, path, args, kwargs = super(SplitField, self).deconstruct()
-        kwargs['no_excerpt_field'] = self.add_excerpt_field
+        kwargs['no_excerpt_field'] = True
         return name, path, args, kwargs
 
 # allow South to handle these fields smoothly