diff --git a/html/dom/__dir__.ini b/html/dom/__dir__.ini
new file mode 100644
index 00000000000000..9883da83025420
--- /dev/null
+++ b/html/dom/__dir__.ini
@@ -0,0 +1 @@
+prefs: [dom.formdata.event.enabled:true]
\ No newline at end of file