diff --git a/tests/ref/basic.list b/tests/ref/basic.list
index 90447a7888a..23b386ece0d 100644
--- a/tests/ref/basic.list
+++ b/tests/ref/basic.list
@@ -162,7 +162,6 @@ prefs:"layout.writing-mode.enabled" == iframe/size_attributes_vertical_writing_m
== last_child_pseudo_a.html last_child_pseudo_b.html
== last_of_type_pseudo_a.html last_of_type_pseudo_b.html
== legacy_cellspacing_attribute_a.html border_spacing_ref.html
-== legacy_table_border_attribute_a.html legacy_table_border_attribute_ref.html
== legacy_td_bgcolor_attribute_a.html legacy_td_bgcolor_attribute_ref.html
== legacy_td_width_attribute_a.html legacy_td_width_attribute_ref.html
== legacy_th_width_attribute_a.html legacy_td_width_attribute_ref.html
diff --git a/tests/wpt/mozilla/meta/MANIFEST.json b/tests/wpt/mozilla/meta/MANIFEST.json
index a7334728e9a..a61110f9622 100644
--- a/tests/wpt/mozilla/meta/MANIFEST.json
+++ b/tests/wpt/mozilla/meta/MANIFEST.json
@@ -707,6 +707,18 @@
"url": "/_mozilla/css/legacy_input_size_attribute_override_a.html"
}
],
+ "css/legacy_table_border_attribute_a.html": [
+ {
+ "path": "css/legacy_table_border_attribute_a.html",
+ "references": [
+ [
+ "/_mozilla/css/legacy_table_border_attribute_ref.html",
+ "=="
+ ]
+ ],
+ "url": "/_mozilla/css/legacy_table_border_attribute_a.html"
+ }
+ ],
"css/nth_child_pseudo_a.html": [
{
"path": "css/nth_child_pseudo_a.html",
@@ -3648,6 +3660,18 @@
"url": "/_mozilla/css/legacy_input_size_attribute_override_a.html"
}
],
+ "css/legacy_table_border_attribute_a.html": [
+ {
+ "path": "css/legacy_table_border_attribute_a.html",
+ "references": [
+ [
+ "/_mozilla/css/legacy_table_border_attribute_ref.html",
+ "=="
+ ]
+ ],
+ "url": "/_mozilla/css/legacy_table_border_attribute_a.html"
+ }
+ ],
"css/nth_child_pseudo_a.html": [
{
"path": "css/nth_child_pseudo_a.html",
diff --git a/tests/ref/legacy_table_border_attribute_a.html b/tests/wpt/mozilla/tests/css/legacy_table_border_attribute_a.html
similarity index 82%
rename from tests/ref/legacy_table_border_attribute_a.html
rename to tests/wpt/mozilla/tests/css/legacy_table_border_attribute_a.html
index d04789c3b08..c3cfd827f05 100644
--- a/tests/ref/legacy_table_border_attribute_a.html
+++ b/tests/wpt/mozilla/tests/css/legacy_table_border_attribute_a.html
@@ -1,6 +1,7 @@
+