diff --git a/config/site_settings.yml b/config/site_settings.yml
index 71221c04ba..28c1f2892e 100644
--- a/config/site_settings.yml
+++ b/config/site_settings.yml
@@ -377,6 +377,7 @@ users:
   invites_per_page:
     client: true
     default: 40
+    min: 1
   delete_user_max_post_age:
     client: true
     default: 60