diff --git a/tests/ref/basic.list b/tests/ref/basic.list
index 40e2067f973..d0ead139bc2 100644
--- a/tests/ref/basic.list
+++ b/tests/ref/basic.list
@@ -334,7 +334,6 @@ resolution=300x300,device-pixel-ratio=2 != pixel_snapping_position_a.html pixel_
== text_justify_none_a.html text_justify_none_ref.html
!= text_overflow_a.html text_overflow_ref.html
== text_overflow_basic_a.html text_overflow_basic_ref.html
-== text_shadow_blur_a.html text_shadow_blur_ref.html
== text_shadow_decorations_a.html text_shadow_decorations_ref.html
== text_shadow_multiple_shadows_a.html text_shadow_multiple_shadows_ref.html
== text_shadow_simple_a.html text_shadow_simple_ref.html
diff --git a/tests/wpt/mozilla/meta/MANIFEST.json b/tests/wpt/mozilla/meta/MANIFEST.json
index dfeb04d5a3c..47173b09ebe 100644
--- a/tests/wpt/mozilla/meta/MANIFEST.json
+++ b/tests/wpt/mozilla/meta/MANIFEST.json
@@ -615,6 +615,18 @@
"url": "/_mozilla/css/table_specified_width_a.html"
}
],
+ "css/text_shadow_blur_a.html": [
+ {
+ "path": "css/text_shadow_blur_a.html",
+ "references": [
+ [
+ "/_mozilla/css/text_shadow_blur_ref.html",
+ "=="
+ ]
+ ],
+ "url": "/_mozilla/css/text_shadow_blur_a.html"
+ }
+ ],
"css/transform_optimization.html": [
{
"path": "css/transform_optimization.html",
@@ -2180,6 +2192,18 @@
"url": "/_mozilla/css/table_specified_width_a.html"
}
],
+ "css/text_shadow_blur_a.html": [
+ {
+ "path": "css/text_shadow_blur_a.html",
+ "references": [
+ [
+ "/_mozilla/css/text_shadow_blur_ref.html",
+ "=="
+ ]
+ ],
+ "url": "/_mozilla/css/text_shadow_blur_a.html"
+ }
+ ],
"css/transform_optimization.html": [
{
"path": "css/transform_optimization.html",
diff --git a/tests/ref/text_shadow_blur_a.html b/tests/wpt/mozilla/tests/css/text_shadow_blur_a.html
similarity index 85%
rename from tests/ref/text_shadow_blur_a.html
rename to tests/wpt/mozilla/tests/css/text_shadow_blur_a.html
index 5846bf0a221..a87f3584d1b 100644
--- a/tests/ref/text_shadow_blur_a.html
+++ b/tests/wpt/mozilla/tests/css/text_shadow_blur_a.html
@@ -1,6 +1,7 @@
+