diff --git a/lib/plugin/instance.rb b/lib/plugin/instance.rb
index a5a5b8f943..30faee615d 100644
--- a/lib/plugin/instance.rb
+++ b/lib/plugin/instance.rb
@@ -1383,7 +1383,7 @@ class Plugin::Instance
     contents = javascript_includes.map { |js| File.read(js) }
 
     if contents.present?
-      ensure_directory(extra_js_file_path)
+      ensure_directory(File.realpath(extra_js_file_path))
       Discourse::Utils.atomic_write_file(extra_js_file_path, contents.join("\n;\n"))
     else
       begin