diff --git a/tests/ref/basic.list b/tests/ref/basic.list
index e48f48c113c..3c909f95a18 100644
--- a/tests/ref/basic.list
+++ b/tests/ref/basic.list
@@ -12,7 +12,6 @@ fragment=top != ../html/acid2.html acid2_ref.html
== acid1_a.html acid1_b.html
== acid2_noscroll.html acid2_ref_broken.html
flaky_cpu == append_style_a.html append_style_b.html
-== block_formatting_context_with_margin_a.html block_formatting_context_with_margin_ref.html
== block_image.html 500x300_green.html
!= block_image.html noteq_500x300_white.html
== block_replaced_content_a.html block_replaced_content_ref.html
diff --git a/tests/wpt/mozilla/meta/MANIFEST.json b/tests/wpt/mozilla/meta/MANIFEST.json
index f7c2064da51..23743b433e9 100644
--- a/tests/wpt/mozilla/meta/MANIFEST.json
+++ b/tests/wpt/mozilla/meta/MANIFEST.json
@@ -543,6 +543,18 @@
"url": "/_mozilla/css/block_formatting_context_translation_a.html"
}
],
+ "css/block_formatting_context_with_margin_a.html": [
+ {
+ "path": "css/block_formatting_context_with_margin_a.html",
+ "references": [
+ [
+ "/_mozilla/css/block_formatting_context_with_margin_ref.html",
+ "=="
+ ]
+ ],
+ "url": "/_mozilla/css/block_formatting_context_with_margin_a.html"
+ }
+ ],
"css/class-namespaces.html": [
{
"path": "css/class-namespaces.html",
@@ -1868,6 +1880,18 @@
"url": "/_mozilla/css/block_formatting_context_translation_a.html"
}
],
+ "css/block_formatting_context_with_margin_a.html": [
+ {
+ "path": "css/block_formatting_context_with_margin_a.html",
+ "references": [
+ [
+ "/_mozilla/css/block_formatting_context_with_margin_ref.html",
+ "=="
+ ]
+ ],
+ "url": "/_mozilla/css/block_formatting_context_with_margin_a.html"
+ }
+ ],
"css/class-namespaces.html": [
{
"path": "css/class-namespaces.html",
diff --git a/tests/ref/block_formatting_context_with_margin_a.html b/tests/wpt/mozilla/tests/css/block_formatting_context_with_margin_a.html
similarity index 83%
rename from tests/ref/block_formatting_context_with_margin_a.html
rename to tests/wpt/mozilla/tests/css/block_formatting_context_with_margin_a.html
index 0259628231e..0ed0a8607b8 100644
--- a/tests/ref/block_formatting_context_with_margin_a.html
+++ b/tests/wpt/mozilla/tests/css/block_formatting_context_with_margin_a.html
@@ -2,6 +2,7 @@
+