diff --git a/tests/ref/basic.list b/tests/ref/basic.list
index fb44e60e17a..967126a0760 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
-== whitespace_nowrap_a.html whitespace_nowrap_ref.html
== whitespace_nowrap_line_breaking_a.html whitespace_nowrap_line_breaking_ref.html
== whitespace_pre.html whitespace_pre_ref.html
== width_nonreplaced_block_simple_a.html width_nonreplaced_block_simple_b.html
diff --git a/tests/wpt/mozilla/meta/MANIFEST.json b/tests/wpt/mozilla/meta/MANIFEST.json
index d35a5e7572a..44d8ee49625 100644
--- a/tests/wpt/mozilla/meta/MANIFEST.json
+++ b/tests/wpt/mozilla/meta/MANIFEST.json
@@ -2111,6 +2111,18 @@
"url": "/_mozilla/css/visibility_hidden.html"
}
],
+ "css/whitespace_nowrap_a.html": [
+ {
+ "path": "css/whitespace_nowrap_a.html",
+ "references": [
+ [
+ "/_mozilla/css/whitespace_nowrap_ref.html",
+ "=="
+ ]
+ ],
+ "url": "/_mozilla/css/whitespace_nowrap_a.html"
+ }
+ ],
"css/word-spacing.html": [
{
"path": "css/word-spacing.html",
@@ -4956,6 +4968,18 @@
"url": "/_mozilla/css/visibility_hidden.html"
}
],
+ "css/whitespace_nowrap_a.html": [
+ {
+ "path": "css/whitespace_nowrap_a.html",
+ "references": [
+ [
+ "/_mozilla/css/whitespace_nowrap_ref.html",
+ "=="
+ ]
+ ],
+ "url": "/_mozilla/css/whitespace_nowrap_a.html"
+ }
+ ],
"css/word-spacing.html": [
{
"path": "css/word-spacing.html",
diff --git a/tests/ref/whitespace_nowrap_a.html b/tests/wpt/mozilla/tests/css/whitespace_nowrap_a.html
similarity index 97%
rename from tests/ref/whitespace_nowrap_a.html
rename to tests/wpt/mozilla/tests/css/whitespace_nowrap_a.html
index 6fb4e6ac8e8..28957fb1930 100644
--- a/tests/ref/whitespace_nowrap_a.html
+++ b/tests/wpt/mozilla/tests/css/whitespace_nowrap_a.html
@@ -1,6 +1,7 @@
+
diff --git a/tests/ref/whitespace_nowrap_ref.html b/tests/wpt/mozilla/tests/css/whitespace_nowrap_ref.html
similarity index 100%
rename from tests/ref/whitespace_nowrap_ref.html
rename to tests/wpt/mozilla/tests/css/whitespace_nowrap_ref.html