diff --git a/tests/ref/basic.list b/tests/ref/basic.list
index 68a0144a64f..01bb9d1af4b 100644
--- a/tests/ref/basic.list
+++ b/tests/ref/basic.list
@@ -28,7 +28,6 @@ flaky_cpu == append_style_a.html append_style_b.html
== fixed_width_overrides_child_intrinsic_width_a.html fixed_width_overrides_child_intrinsic_width_ref.html
prefs:"layout.flex-direction.enabled,layout.flex.enabled" == flex_column_direction.html flex_column_direction_ref.html
prefs:"layout.flex.enabled" == flex_row_direction.html flex_row_direction_ref.html
-== float_clearance_intrinsic_width_a.html float_clearance_intrinsic_width_ref.html
== floated_negative_margins_a.html floated_negative_margins_ref.html
== font_size.html font_size_ref.html
# `?` and `#` in the name is a test for https://github.com/servo/servo/issues/3340
diff --git a/tests/wpt/mozilla/meta/MANIFEST.json b/tests/wpt/mozilla/meta/MANIFEST.json
index 7afa5ee0df5..d96cc8fbb1d 100644
--- a/tests/wpt/mozilla/meta/MANIFEST.json
+++ b/tests/wpt/mozilla/meta/MANIFEST.json
@@ -1079,6 +1079,18 @@
"url": "/_mozilla/css/float_clearance_a.html"
}
],
+ "css/float_clearance_intrinsic_width_a.html": [
+ {
+ "path": "css/float_clearance_intrinsic_width_a.html",
+ "references": [
+ [
+ "/_mozilla/css/float_clearance_intrinsic_width_ref.html",
+ "=="
+ ]
+ ],
+ "url": "/_mozilla/css/float_clearance_intrinsic_width_a.html"
+ }
+ ],
"css/float_intrinsic_height.html": [
{
"path": "css/float_intrinsic_height.html",
@@ -5532,6 +5544,18 @@
"url": "/_mozilla/css/float_clearance_a.html"
}
],
+ "css/float_clearance_intrinsic_width_a.html": [
+ {
+ "path": "css/float_clearance_intrinsic_width_a.html",
+ "references": [
+ [
+ "/_mozilla/css/float_clearance_intrinsic_width_ref.html",
+ "=="
+ ]
+ ],
+ "url": "/_mozilla/css/float_clearance_intrinsic_width_a.html"
+ }
+ ],
"css/float_intrinsic_height.html": [
{
"path": "css/float_intrinsic_height.html",
diff --git a/tests/ref/float_clearance_intrinsic_width_a.html b/tests/wpt/mozilla/tests/css/float_clearance_intrinsic_width_a.html
similarity index 88%
rename from tests/ref/float_clearance_intrinsic_width_a.html
rename to tests/wpt/mozilla/tests/css/float_clearance_intrinsic_width_a.html
index 2e9704a5914..cfc418664dd 100644
--- a/tests/ref/float_clearance_intrinsic_width_a.html
+++ b/tests/wpt/mozilla/tests/css/float_clearance_intrinsic_width_a.html
@@ -1,6 +1,7 @@
+