diff --git a/gcm/gcm.py b/gcm/gcm.py
index e8c9c36..83db02f 100644
--- a/gcm/gcm.py
+++ b/gcm/gcm.py
@@ -225,6 +225,8 @@ def raise_error(self, error):
                 "A Registration ID is tied to a certain group of senders")
         elif error == 'MessageTooBig':
             raise GCMMessageTooBigException("Message can't exceed 4096 bytes")
+        elif error == 'MissingRegistration':
+            raise GCMMissingRegistrationException("Missing registration_ids")
 
     def handle_plaintext_response(self, response):