diff --git a/tests/ref/basic.list b/tests/ref/basic.list
index 4669b405277..622aacc0fe1 100644
--- a/tests/ref/basic.list
+++ b/tests/ref/basic.list
@@ -346,7 +346,6 @@ resolution=300x300,device-pixel-ratio=2 != pixel_snapping_position_a.html pixel_
== transform_3d.html transform_3d_ref.html
== transform_optimization.html transform_optimization_ref.html
flaky_cpu,prefs:"layout.writing-mode.enabled" == vertical-lr-blocks.html vertical-lr-blocks_ref.html
-== vertical_align_bottom_a.html vertical_align_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 f6f6705961d..b18d144c6b4 100644
--- a/tests/wpt/mozilla/meta/MANIFEST.json
+++ b/tests/wpt/mozilla/meta/MANIFEST.json
@@ -663,6 +663,18 @@
"url": "/_mozilla/css/upper_id_attr.html"
}
],
+ "css/vertical_align_bottom_a.html": [
+ {
+ "path": "css/vertical_align_bottom_a.html",
+ "references": [
+ [
+ "/_mozilla/css/vertical_align_bottom_ref.html",
+ "=="
+ ]
+ ],
+ "url": "/_mozilla/css/vertical_align_bottom_a.html"
+ }
+ ],
"css/vertical_align_inline_block_a.html": [
{
"path": "css/vertical_align_inline_block_a.html",
@@ -2192,6 +2204,18 @@
"url": "/_mozilla/css/upper_id_attr.html"
}
],
+ "css/vertical_align_bottom_a.html": [
+ {
+ "path": "css/vertical_align_bottom_a.html",
+ "references": [
+ [
+ "/_mozilla/css/vertical_align_bottom_ref.html",
+ "=="
+ ]
+ ],
+ "url": "/_mozilla/css/vertical_align_bottom_a.html"
+ }
+ ],
"css/vertical_align_inline_block_a.html": [
{
"path": "css/vertical_align_inline_block_a.html",
diff --git a/tests/ref/vertical_align_bottom_a.html b/tests/wpt/mozilla/tests/css/vertical_align_bottom_a.html
similarity index 91%
rename from tests/ref/vertical_align_bottom_a.html
rename to tests/wpt/mozilla/tests/css/vertical_align_bottom_a.html
index e09d9397658..c0ffdac8f2b 100644
--- a/tests/ref/vertical_align_bottom_a.html
+++ b/tests/wpt/mozilla/tests/css/vertical_align_bottom_a.html
@@ -1,6 +1,7 @@
+