diff --git a/tests/ref/basic.list b/tests/ref/basic.list
index 3063f2cf286..6af274370a1 100644
--- a/tests/ref/basic.list
+++ b/tests/ref/basic.list
@@ -26,7 +26,6 @@ flaky_cpu == append_style_a.html append_style_b.html
== box_shadow_inset_parsing_a.html box_shadow_inset_parsing_ref.html
== box_shadow_paint_order_a.html box_shadow_paint_order_ref.html
== box_shadow_spread_a.html box_shadow_spread_ref.html
-== box_sizing_border_box_a.html box_sizing_border_box_ref.html
== br.html br-ref.html
== canvas_radial_gradient_a.html canvas_radial_gradient_ref.html
== case-insensitive-font-family.html case-insensitive-font-family-ref.html
diff --git a/tests/wpt/mozilla/meta/MANIFEST.json b/tests/wpt/mozilla/meta/MANIFEST.json
index c3c1b325e69..49109f718be 100644
--- a/tests/wpt/mozilla/meta/MANIFEST.json
+++ b/tests/wpt/mozilla/meta/MANIFEST.json
@@ -779,6 +779,18 @@
"url": "/_mozilla/css/border_spacing_a.html"
}
],
+ "css/box_sizing_border_box_a.html": [
+ {
+ "path": "css/box_sizing_border_box_a.html",
+ "references": [
+ [
+ "/_mozilla/css/box_sizing_border_box_ref.html",
+ "=="
+ ]
+ ],
+ "url": "/_mozilla/css/box_sizing_border_box_a.html"
+ }
+ ],
"css/box_sizing_sanity_check_a.html": [
{
"path": "css/box_sizing_sanity_check_a.html",
@@ -5136,6 +5148,18 @@
"url": "/_mozilla/css/border_spacing_a.html"
}
],
+ "css/box_sizing_border_box_a.html": [
+ {
+ "path": "css/box_sizing_border_box_a.html",
+ "references": [
+ [
+ "/_mozilla/css/box_sizing_border_box_ref.html",
+ "=="
+ ]
+ ],
+ "url": "/_mozilla/css/box_sizing_border_box_a.html"
+ }
+ ],
"css/box_sizing_sanity_check_a.html": [
{
"path": "css/box_sizing_sanity_check_a.html",
diff --git a/tests/ref/box_sizing_border_box_a.html b/tests/wpt/mozilla/tests/css/box_sizing_border_box_a.html
similarity index 81%
rename from tests/ref/box_sizing_border_box_a.html
rename to tests/wpt/mozilla/tests/css/box_sizing_border_box_a.html
index 4deb2a93600..8be1adaf202 100644
--- a/tests/ref/box_sizing_border_box_a.html
+++ b/tests/wpt/mozilla/tests/css/box_sizing_border_box_a.html
@@ -1,5 +1,6 @@
+
diff --git a/tests/ref/box_sizing_border_box_ref.html b/tests/wpt/mozilla/tests/css/box_sizing_border_box_ref.html
similarity index 100%
rename from tests/ref/box_sizing_border_box_ref.html
rename to tests/wpt/mozilla/tests/css/box_sizing_border_box_ref.html