diff --git a/shop/models.py b/shop/models.py
index cbdfb97d..7e14e482 100644
--- a/shop/models.py
+++ b/shop/models.py
@@ -173,10 +173,14 @@ class EpayCallback(CreatedUpdatedModel, UUIDModel):
     class Meta:
         verbose_name = 'Epay Callback'
         verbose_name_plural = 'Epay Callbacks'
+        ordering = ['-created']
 
     payload = JSONField()
     md5valid = models.BooleanField(default=False)
 
+    def __str__(self):
+        return 'callback at %s (%smd5 valid)' % (self.created, 'not ' if not self.md5valid)
+
 
 class EpayPayment(CreatedUpdatedModel, UUIDModel):
     class Meta: