diff --git a/wo/cli/plugins/site.py b/wo/cli/plugins/site.py
index dbe9a19..f96642f 100644
--- a/wo/cli/plugins/site.py
+++ b/wo/cli/plugins/site.py
@@ -1174,7 +1174,7 @@ class WOSiteUpdateController(CementBaseController):
         data['wo_db_pass'] = check_site.db_password
         data['wo_db_host'] = check_site.db_host
 
-        if not pargs.letsencrypt or pargs.hsts:
+        if not (pargs.letsencrypt or pargs.hsts):
             try:
                 pre_run_checks(self)
             except SiteError as e: