1 files changed, 5 insertions, 1 deletions

diff --git a/src/mailman_pgp/rest/lists.py b/src/mailman_pgp/rest/lists.py
index 4cffa38..72fa7a4 100644
--- a/src/mailman_pgp/rest/lists.py
+++ b/src/mailman_pgp/rest/lists.py
@@ -80,8 +80,12 @@ class AListPubkey:
     def on_get(self, request, response):
         """/lists/<list_id>/key"""
         if self._mlist is None:
-            return not_found()
+            return not_found(response)
         else:
+            pubkey = self._mlist.pubkey
+            if pubkey is None:
+                return not_found(response)
+
             resource = dict(public_key=str(self._mlist.pubkey),
                             key_fingerprint=str(
                                 self._mlist.pubkey.fingerprint))