diff --git a/app/auth/views/fido.py b/app/auth/views/fido.py
index d44f83f8..c65a6ff5 100644
--- a/app/auth/views/fido.py
+++ b/app/auth/views/fido.py
@@ -155,7 +155,8 @@ def fido():
     webauthn_assertion_options = webauthn_assertion_options.assertion_dict
     try:
         # HACK: We need to upgrade to webauthn > 1 so it can support specifying the transports
-        del webauthn_assertion_options["allowCredentials"][0]["transports"]
+        for credential in webauthn_assertion_options["allowCredentials"]:
+            del credential["transports"]
     except KeyError:
         # Should never happen but...
         pass