diff --git a/tests/ref/basic.list b/tests/ref/basic.list
index 4e5c50113bc..7ce0fd763af 100644
--- a/tests/ref/basic.list
+++ b/tests/ref/basic.list
@@ -252,7 +252,6 @@ prefs:"layout.viewport.enabled" == viewport_rule.html viewport_rule_ref.html
# == webgl-context/tex_image_2d_simple.html webgl-context/tex_image_2d_simple_ref.html
flaky_macos == white_space_intrinsic_sizes_a.html white_space_intrinsic_sizes_ref.html
-== word_break_a.html word_break_ref.html
# This file must be sorted alphabetically.
diff --git a/tests/wpt/mozilla/meta/MANIFEST.json b/tests/wpt/mozilla/meta/MANIFEST.json
index f457f446012..f4b0d806918 100644
--- a/tests/wpt/mozilla/meta/MANIFEST.json
+++ b/tests/wpt/mozilla/meta/MANIFEST.json
@@ -2171,6 +2171,18 @@
"url": "/_mozilla/css/word-spacing.html"
}
],
+ "css/word_break_a.html": [
+ {
+ "path": "css/word_break_a.html",
+ "references": [
+ [
+ "/_mozilla/css/word_break_ref.html",
+ "=="
+ ]
+ ],
+ "url": "/_mozilla/css/word_break_a.html"
+ }
+ ],
"mozilla/canvas/drawimage_html_image_1.html": [
{
"path": "mozilla/canvas/drawimage_html_image_1.html",
@@ -5064,6 +5076,18 @@
"url": "/_mozilla/css/word-spacing.html"
}
],
+ "css/word_break_a.html": [
+ {
+ "path": "css/word_break_a.html",
+ "references": [
+ [
+ "/_mozilla/css/word_break_ref.html",
+ "=="
+ ]
+ ],
+ "url": "/_mozilla/css/word_break_a.html"
+ }
+ ],
"mozilla/canvas/drawimage_html_image_1.html": [
{
"path": "mozilla/canvas/drawimage_html_image_1.html",
diff --git a/tests/ref/word_break_a.html b/tests/wpt/mozilla/tests/css/word_break_a.html
similarity index 87%
rename from tests/ref/word_break_a.html
rename to tests/wpt/mozilla/tests/css/word_break_a.html
index a26155fc16e..3d1427258ac 100644
--- a/tests/ref/word_break_a.html
+++ b/tests/wpt/mozilla/tests/css/word_break_a.html
@@ -1,6 +1,7 @@
+