diff --git a/tests/wpt/mozilla/tests/mozilla/interfaces.html b/tests/wpt/mozilla/tests/mozilla/interfaces.html
index bd0a58dbe6b..2f023e03541 100644
--- a/tests/wpt/mozilla/tests/mozilla/interfaces.html
+++ b/tests/wpt/mozilla/tests/mozilla/interfaces.html
@@ -22,7 +22,6 @@ var ecmaGlobals = [
   "EvalError",
   "Float32Array",
   "Float64Array",
-  "FocusEvent",
   "Function",
   "Infinity",
   "Int16Array",
@@ -105,6 +104,7 @@ var interfaceNamesInGlobalScope = [
   "File",
   "FileList",
   "FileReader",
+  "FocusEvent",
   "FormData",
   "HTMLAnchorElement",
   "HTMLAppletElement",