diff --git a/tests/ref/basic.list b/tests/ref/basic.list
index 4dc54c357a4..b9e05814f7b 100644
--- a/tests/ref/basic.list
+++ b/tests/ref/basic.list
@@ -360,7 +360,6 @@ flaky_cpu,prefs:"layout.writing-mode.enabled" == vertical-lr-blocks.html vertica
== vertical_align_text_bottom_a.html vertical_align_text_bottom_ref.html
== vertical_align_text_top_a.html vertical_align_text_top_ref.html
== vertical_align_top_a.html vertical_align_top_ref.html
-== vertical_align_top_bottom_a.html vertical_align_top_bottom_ref.html
== viewport_meta.html viewport_rule_ref.html
resolution=800x600 == viewport_percentage_vmin_vmax.html viewport_percentage_vmin_vmax_a.html
# resolution=600x800 == viewport_percentage_vmin_vmax.html viewport_percentage_vmin_vmax_b.html
diff --git a/tests/wpt/mozilla/meta/MANIFEST.json b/tests/wpt/mozilla/meta/MANIFEST.json
index 8e10334b21e..40e3407ad14 100644
--- a/tests/wpt/mozilla/meta/MANIFEST.json
+++ b/tests/wpt/mozilla/meta/MANIFEST.json
@@ -603,6 +603,18 @@
"url": "/_mozilla/css/stacking_context_rtl.html"
}
],
+ "css/vertical_align_top_bottom_a.html": [
+ {
+ "path": "css/vertical_align_top_bottom_a.html",
+ "references": [
+ [
+ "/_mozilla/css/vertical_align_top_bottom_ref.html",
+ "=="
+ ]
+ ],
+ "url": "/_mozilla/css/vertical_align_top_bottom_a.html"
+ }
+ ],
"css/vertical_align_top_span_a.html": [
{
"path": "css/vertical_align_top_span_a.html",
@@ -1964,6 +1976,18 @@
"url": "/_mozilla/css/stacking_context_rtl.html"
}
],
+ "css/vertical_align_top_bottom_a.html": [
+ {
+ "path": "css/vertical_align_top_bottom_a.html",
+ "references": [
+ [
+ "/_mozilla/css/vertical_align_top_bottom_ref.html",
+ "=="
+ ]
+ ],
+ "url": "/_mozilla/css/vertical_align_top_bottom_a.html"
+ }
+ ],
"css/vertical_align_top_span_a.html": [
{
"path": "css/vertical_align_top_span_a.html",
diff --git a/tests/ref/vertical_align_top_bottom_a.html b/tests/wpt/mozilla/tests/css/vertical_align_top_bottom_a.html
similarity index 92%
rename from tests/ref/vertical_align_top_bottom_a.html
rename to tests/wpt/mozilla/tests/css/vertical_align_top_bottom_a.html
index 03b8dd5b7b2..de5e108809f 100644
--- a/tests/ref/vertical_align_top_bottom_a.html
+++ b/tests/wpt/mozilla/tests/css/vertical_align_top_bottom_a.html
@@ -2,6 +2,7 @@
+