diff --git a/rest_framework/authtoken/models.py b/rest_framework/authtoken/models.py
index db21d44c35..1aece93ece 100644
--- a/rest_framework/authtoken/models.py
+++ b/rest_framework/authtoken/models.py
@@ -37,3 +37,6 @@ def generate_key(self):
 
     def __unicode__(self):
         return self.key
+        
+    def __str__(self):
+        return self.key