diff --git a/dyndnshelper/routers/fqdns.py b/dyndnshelper/routers/fqdns.py
index 0a9d423..c4a8618 100644
--- a/dyndnshelper/routers/fqdns.py
+++ b/dyndnshelper/routers/fqdns.py
@@ -57,8 +57,7 @@ async def dyndns(
     username: Annotated[str, Depends(check_credentials_for_fqdn)],
     fqdn_settings: Annotated[FQDNSettings, Depends(get_fqdn_settings)],
     ip: Annotated[list[IPv4Address | IPv6Address | EmptyStr], Query(description='IPv4 or IPv6 addresses')] = None,
-    ipv6lanprefix: Annotated[IPv6Network, Query(description='IPv6 Network with Prefix. Will be used to update AAAA records for configured IIDs')] = None,
-    dualstack: Annotated[bool, Query()] = None
+    ipv6lanprefix: Annotated[IPv6Network, Query(description='IPv6 Network with Prefix. Will be used to update AAAA records for configured IIDs')] = None
 ):
     if ip:
         # remove empty string items