diff --git a/tests/ref/basic.list b/tests/ref/basic.list
index 6144aa1632a..0ca45289d1a 100644
--- a/tests/ref/basic.list
+++ b/tests/ref/basic.list
@@ -184,7 +184,6 @@ flaky_cpu == linebreak_simple_a.html linebreak_simple_b.html
== min_width_float_simple_a.html min_width_float_simple_b.html
== min_width_simple_a.html min_width_simple_b.html
== minimum_line_height_a.html minimum_line_height_b.html
-== mix_blend_mode_a.html mix_blend_mode_ref.html
== negative_margins_a.html negative_margins_b.html
== no-image.html no-image-ref.html
== no_image_background_a.html no_image_background_ref.html
diff --git a/tests/wpt/mozilla/meta/MANIFEST.json b/tests/wpt/mozilla/meta/MANIFEST.json
index 98c3596bd1b..190fefd07d9 100644
--- a/tests/wpt/mozilla/meta/MANIFEST.json
+++ b/tests/wpt/mozilla/meta/MANIFEST.json
@@ -839,6 +839,18 @@
"url": "/_mozilla/css/min_max_height_a.html"
}
],
+ "css/mix_blend_mode_a.html": [
+ {
+ "path": "css/mix_blend_mode_a.html",
+ "references": [
+ [
+ "/_mozilla/css/mix_blend_mode_ref.html",
+ "=="
+ ]
+ ],
+ "url": "/_mozilla/css/mix_blend_mode_a.html"
+ }
+ ],
"css/multiple_css_class_a.html": [
{
"path": "css/multiple_css_class_a.html",
@@ -3960,6 +3972,18 @@
"url": "/_mozilla/css/min_max_height_a.html"
}
],
+ "css/mix_blend_mode_a.html": [
+ {
+ "path": "css/mix_blend_mode_a.html",
+ "references": [
+ [
+ "/_mozilla/css/mix_blend_mode_ref.html",
+ "=="
+ ]
+ ],
+ "url": "/_mozilla/css/mix_blend_mode_a.html"
+ }
+ ],
"css/multiple_css_class_a.html": [
{
"path": "css/multiple_css_class_a.html",
diff --git a/tests/ref/mix_blend_mode_a.html b/tests/wpt/mozilla/tests/css/mix_blend_mode_a.html
similarity index 93%
rename from tests/ref/mix_blend_mode_a.html
rename to tests/wpt/mozilla/tests/css/mix_blend_mode_a.html
index f2c49230625..4e6bc7918ce 100644
--- a/tests/ref/mix_blend_mode_a.html
+++ b/tests/wpt/mozilla/tests/css/mix_blend_mode_a.html
@@ -1,6 +1,7 @@
+