diff --git a/components/script/dom/webidls/CloseEvent.webidl b/components/script/dom/webidls/CloseEvent.webidl
index c75b27e8184..b30096e0fb6 100644
--- a/components/script/dom/webidls/CloseEvent.webidl
+++ b/components/script/dom/webidls/CloseEvent.webidl
@@ -11,7 +11,7 @@ interface CloseEvent : Event {
 };
 
 dictionary CloseEventInit : EventInit {
-  boolean wasClean = true;
+  boolean wasClean = false;
   unsigned short code = 0;
   DOMString reason = "";
 };
diff --git a/tests/wpt/metadata/websockets/interfaces/CloseEvent/constructor.html.ini b/tests/wpt/metadata/websockets/interfaces/CloseEvent/constructor.html.ini
deleted file mode 100644
index 4874ef647a7..00000000000
--- a/tests/wpt/metadata/websockets/interfaces/CloseEvent/constructor.html.ini
+++ /dev/null
@@ -1,5 +0,0 @@
-[constructor.html]
-  type: testharness
-  [new CloseEvent() without dictionary]
-    expected: FAIL
-