diff --git a/ungleichotp/otpauth/serializer.py b/ungleichotp/otpauth/serializer.py
index 0a9cbbd..b68f4be 100644
--- a/ungleichotp/otpauth/serializer.py
+++ b/ungleichotp/otpauth/serializer.py
@@ -74,9 +74,9 @@ class TokenSerializer(serializers.Serializer):
     realm_name = 'realm'
 
     def save(self):
-        token_in = self.validated_data.get('token')
-        name_in =  self.validated_data.get('name')
-        realm_in =  self.validated_data.get('realm')
+        token_in = self.validated_data.get(self.token_name)
+        name_in =  self.validated_data.get(self.name_name)
+        realm_in =  self.validated_data.get(self.realm_name)
 
         # 1. Verify that the connection might authenticate
         try: