diff --git a/apps/ocr/models.py b/apps/ocr/models.py
index 86dc40b3d5..6e25ef334f 100644
--- a/apps/ocr/models.py
+++ b/apps/ocr/models.py
@@ -96,6 +96,7 @@ class QueueTransformation(models.Model):
     transformation = models.CharField(choices=get_available_transformations_choices(), max_length=128, verbose_name=_(u'transformation'))
     arguments = models.TextField(blank=True, null=True, verbose_name=_(u'arguments'), help_text=_(u'Use dictionaries to indentify arguments, example: %s') % u'{\'degrees\':90}', validators=[ArgumentsValidator()])
 
+    objects = models.Manager()
     transformations = SourceTransformationManager()
 
     def __unicode__(self):
diff --git a/apps/sources/models.py b/apps/sources/models.py
index 8b6ce91fe7..5cb757b042 100644
--- a/apps/sources/models.py
+++ b/apps/sources/models.py
@@ -141,7 +141,8 @@ class SourceTransformation(models.Model):
     transformation = models.CharField(choices=get_available_transformations_choices(), max_length=128, verbose_name=_(u'transformation'))
     arguments = models.TextField(blank=True, null=True, verbose_name=_(u'arguments'), help_text=_(u'Use dictionaries to indentify arguments, example: %s') % u'{\'degrees\':90}', validators=[ArgumentsValidator()])
 
-    objects = SourceTransformationManager()
+    objects = models.Manager()
+    transformations = SourceTransformationManager()
 
     def __unicode__(self):
         #return u'"%s" for %s' % (self.get_transformation_display(), unicode(self.content_object))