diff --git a/src/main/scala/org/scalajs/dom/raw/lib.scala b/src/main/scala/org/scalajs/dom/raw/lib.scala
index 1d49e9aa9..77a6c1785 100644
--- a/src/main/scala/org/scalajs/dom/raw/lib.scala
+++ b/src/main/scala/org/scalajs/dom/raw/lib.scala
@@ -5677,7 +5677,7 @@ class StyleSheetList extends js.Object {
 }
 
 trait CustomEventInit extends EventInit {
-  var detailArg: js.UndefOr[Any] = js.undefined
+  var detail: js.UndefOr[Any] = js.undefined
 }
 
 /**