diff --git a/app/models/category.rb b/app/models/category.rb
index b9f30b26b6a..444a4ec2b0a 100644
--- a/app/models/category.rb
+++ b/app/models/category.rb
@@ -313,7 +313,7 @@ SQL
   end
 
   def allowed_tags=(tag_names_arg)
-    DiscourseTagging.add_or_create_tags_by_name(self, tag_names_arg)
+    DiscourseTagging.add_or_create_tags_by_name(self, tag_names_arg, {unlimited: true})
   end
 
   def allowed_tag_groups=(group_names)