diff --git a/src/pretix/base/secrets.py b/src/pretix/base/secrets.py
index 89c8e0d677..56803bb465 100644
--- a/src/pretix/base/secrets.py
+++ b/src/pretix/base/secrets.py
@@ -247,7 +247,7 @@ def assign_ticket_secret(event, position, force_invalidate_if_revokation_list_us
         **kwargs
     )
     changed = position.secret != secret
-    if position.secret and changed and gen.use_revocation_list:
+    if position.secret and changed and gen.use_revocation_list and position.pk:
         position.revoked_secrets.create(event=event, secret=position.secret)
     position.secret = secret
     if save and changed: