diff --git a/tests/ref/basic.list b/tests/ref/basic.list
index c7313b896d8..6c771cf54e7 100644
--- a/tests/ref/basic.list
+++ b/tests/ref/basic.list
@@ -11,7 +11,6 @@ fragment=top != ../html/acid2.html acid2_ref.html
== acid2_noscroll.html acid2_ref_broken.html
flaky_cpu == append_style_a.html append_style_b.html
-!= box_shadow_blur_a.html box_shadow_blur_ref.html
== box_shadow_default_color_a.html box_shadow_default_color_ref.html
== box_shadow_inset_a.html box_shadow_inset_ref.html
== box_shadow_inset_parsing_a.html box_shadow_inset_parsing_ref.html
diff --git a/tests/wpt/mozilla/meta/MANIFEST.json b/tests/wpt/mozilla/meta/MANIFEST.json
index d4d25c83a34..becfa497d58 100644
--- a/tests/wpt/mozilla/meta/MANIFEST.json
+++ b/tests/wpt/mozilla/meta/MANIFEST.json
@@ -863,6 +863,18 @@
"url": "/_mozilla/css/box_shadow_bg.html"
}
],
+ "css/box_shadow_blur_a.html": [
+ {
+ "path": "css/box_shadow_blur_a.html",
+ "references": [
+ [
+ "/_mozilla/css/box_shadow_blur_ref.html",
+ "!="
+ ]
+ ],
+ "url": "/_mozilla/css/box_shadow_blur_a.html"
+ }
+ ],
"css/box_shadow_border_box_a.html": [
{
"path": "css/box_shadow_border_box_a.html",
@@ -5436,6 +5448,18 @@
"url": "/_mozilla/css/box_shadow_bg.html"
}
],
+ "css/box_shadow_blur_a.html": [
+ {
+ "path": "css/box_shadow_blur_a.html",
+ "references": [
+ [
+ "/_mozilla/css/box_shadow_blur_ref.html",
+ "!="
+ ]
+ ],
+ "url": "/_mozilla/css/box_shadow_blur_a.html"
+ }
+ ],
"css/box_shadow_border_box_a.html": [
{
"path": "css/box_shadow_border_box_a.html",
diff --git a/tests/ref/box_shadow_blur_a.html b/tests/wpt/mozilla/tests/css/box_shadow_blur_a.html
similarity index 85%
rename from tests/ref/box_shadow_blur_a.html
rename to tests/wpt/mozilla/tests/css/box_shadow_blur_a.html
index b49d2fa7837..04e148133c3 100644
--- a/tests/ref/box_shadow_blur_a.html
+++ b/tests/wpt/mozilla/tests/css/box_shadow_blur_a.html
@@ -1,5 +1,6 @@
+