diff --git a/tests/ref/background_position_b.html b/tests/ref/background_position_b.html
deleted file mode 100644
index 6c1d0ab9ecd..00000000000
--- a/tests/ref/background_position_b.html
+++ /dev/null
@@ -1,19 +0,0 @@
-
-
-
-You see here a scroll labeled FOOBIE BLETCH.
-
-
-
-
-
-
-
-
diff --git a/tests/ref/basic.list b/tests/ref/basic.list
index 81b96995ee7..501ca02dc22 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
-== background_position_percent.html background_position_b.html
== background_position_shorthand.html background_position_shorthand_ref.html
== background_repeat_both_a.html background_repeat_both_b.html
== background_repeat_none_a.html background_repeat_none_b.html
diff --git a/tests/wpt/mozilla/meta/MANIFEST.json b/tests/wpt/mozilla/meta/MANIFEST.json
index f2bbbf68c0b..8cd63cc7c26 100644
--- a/tests/wpt/mozilla/meta/MANIFEST.json
+++ b/tests/wpt/mozilla/meta/MANIFEST.json
@@ -303,6 +303,18 @@
"url": "/_mozilla/css/background_position_keyword.html"
}
],
+ "css/background_position_percent.html": [
+ {
+ "path": "css/background_position_percent.html",
+ "references": [
+ [
+ "/_mozilla/css/background_position_b.html",
+ "=="
+ ]
+ ],
+ "url": "/_mozilla/css/background_position_percent.html"
+ }
+ ],
"css/class-namespaces.html": [
{
"path": "css/class-namespaces.html",
@@ -1388,6 +1400,18 @@
"url": "/_mozilla/css/background_position_keyword.html"
}
],
+ "css/background_position_percent.html": [
+ {
+ "path": "css/background_position_percent.html",
+ "references": [
+ [
+ "/_mozilla/css/background_position_b.html",
+ "=="
+ ]
+ ],
+ "url": "/_mozilla/css/background_position_percent.html"
+ }
+ ],
"css/class-namespaces.html": [
{
"path": "css/class-namespaces.html",
diff --git a/tests/ref/background_position_percent.html b/tests/wpt/mozilla/tests/css/background_position_percent.html
similarity index 87%
rename from tests/ref/background_position_percent.html
rename to tests/wpt/mozilla/tests/css/background_position_percent.html
index 3b3ecc77ec0..daf29276e59 100644
--- a/tests/ref/background_position_percent.html
+++ b/tests/wpt/mozilla/tests/css/background_position_percent.html
@@ -2,6 +2,7 @@
You see here a scroll labeled FOOBIE BLETCH.
+