diff --git a/mig/install/generateconfs.py b/mig/install/generateconfs.py
index 216fd9f48..6a57cf9f1 100755
--- a/mig/install/generateconfs.py
+++ b/mig/install/generateconfs.py
@@ -283,6 +283,7 @@ def main(argv, _generate_confs=generate_confs, _print=print):
         'enable_cloud',
         'enable_gdp',
         'enable_hsts',
+        'enable_antislowloris',
         'enable_vhost_certs',
         'enable_verify_certs',
         'enable_seafile',