diff --git a/tests/ref/basic.list b/tests/ref/basic.list
index c0fb11df27c..6bff3ba571c 100644
--- a/tests/ref/basic.list
+++ b/tests/ref/basic.list
@@ -68,7 +68,6 @@ prefs:"layout.flex.enabled" == flex_row_direction.html flex_row_direction_ref.ht
== font_color_attribute_a.html font_color_attribute_ref.html
== font_face_attribute.html font_face_attribute_ref.html
== font_size.html font_size_ref.html
-== font_style.html font_style_ref.html
== height_compute_reset.html height_compute.html
# `?` and `#` in the name is a test for https://github.com/servo/servo/issues/3340
== hide_after_create.html hide_after_create_ref.html
diff --git a/tests/wpt/mozilla/meta/MANIFEST.json b/tests/wpt/mozilla/meta/MANIFEST.json
index 6d05263397e..9def4328afc 100644
--- a/tests/wpt/mozilla/meta/MANIFEST.json
+++ b/tests/wpt/mozilla/meta/MANIFEST.json
@@ -803,6 +803,18 @@
"url": "/_mozilla/css/flex_nochild.html"
}
],
+ "css/font_style.html": [
+ {
+ "path": "css/font_style.html",
+ "references": [
+ [
+ "/_mozilla/css/font_style_ref.html",
+ "=="
+ ]
+ ],
+ "url": "/_mozilla/css/font_style.html"
+ }
+ ],
"css/img_block_display_a.html": [
{
"path": "css/img_block_display_a.html",
@@ -4776,6 +4788,18 @@
"url": "/_mozilla/css/flex_nochild.html"
}
],
+ "css/font_style.html": [
+ {
+ "path": "css/font_style.html",
+ "references": [
+ [
+ "/_mozilla/css/font_style_ref.html",
+ "=="
+ ]
+ ],
+ "url": "/_mozilla/css/font_style.html"
+ }
+ ],
"css/img_block_display_a.html": [
{
"path": "css/img_block_display_a.html",
diff --git a/tests/ref/font_style.html b/tests/wpt/mozilla/tests/css/font_style.html
similarity index 85%
rename from tests/ref/font_style.html
rename to tests/wpt/mozilla/tests/css/font_style.html
index 18c67976c26..fbbd662f0f9 100644
--- a/tests/ref/font_style.html
+++ b/tests/wpt/mozilla/tests/css/font_style.html
@@ -1,6 +1,7 @@
+