diff --git a/tests/wpt/metadata-css/css-transitions-1_dev/html/events-004.html.ini b/tests/wpt/metadata-css/css-transitions-1_dev/html/events-004.htm.ini
similarity index 80%
rename from tests/wpt/metadata-css/css-transitions-1_dev/html/events-004.html.ini
rename to tests/wpt/metadata-css/css-transitions-1_dev/html/events-004.htm.ini
index 29153efc791..a437342a997 100644
--- a/tests/wpt/metadata-css/css-transitions-1_dev/html/events-004.html.ini
+++ b/tests/wpt/metadata-css/css-transitions-1_dev/html/events-004.htm.ini
@@ -1,3 +1,3 @@
-[events-004.html]
+[events-004.htm]
   type: testharness
   disabled: https://github.com/servo/servo/issues/13887