diff --git a/tests/ref/basic.list b/tests/ref/basic.list
index e198109afc5..d9bf51f4696 100644
--- a/tests/ref/basic.list
+++ b/tests/ref/basic.list
@@ -269,7 +269,6 @@ resolution=300x300,device-pixel-ratio=2 != pixel_snapping_position_a.html pixel_
== position_relative_stacking_context_contents_a.html position_relative_stacking_context_contents_ref.html
== position_relative_top_percentage_a.html position_relative_top_percentage_b.html
== position_relative_vertical_percentage_overflow_a.html position_relative_vertical_percentage_overflow_ref.html
-== pre_ignorable_whitespace_a.html pre_ignorable_whitespace_ref.html
== root_display_inline_a.html root_display_ref.html
== root_display_without_style_a.html root_display_ref.html
# text_decoration_propagation_a.html text_decoration_propagation_b.html
diff --git a/tests/wpt/mozilla/meta/MANIFEST.json b/tests/wpt/mozilla/meta/MANIFEST.json
index 66f53f13cbd..6a1993e8830 100644
--- a/tests/wpt/mozilla/meta/MANIFEST.json
+++ b/tests/wpt/mozilla/meta/MANIFEST.json
@@ -683,6 +683,18 @@
"url": "/_mozilla/css/flex_nochild.html"
}
],
+ "css/pre_ignorable_whitespace_a.html": [
+ {
+ "path": "css/pre_ignorable_whitespace_a.html",
+ "references": [
+ [
+ "/_mozilla/css/pre_ignorable_whitespace_ref.html",
+ "=="
+ ]
+ ],
+ "url": "/_mozilla/css/pre_ignorable_whitespace_a.html"
+ }
+ ],
"css/pre_with_tab.html": [
{
"path": "css/pre_with_tab.html",
@@ -3036,6 +3048,18 @@
"url": "/_mozilla/css/flex_nochild.html"
}
],
+ "css/pre_ignorable_whitespace_a.html": [
+ {
+ "path": "css/pre_ignorable_whitespace_a.html",
+ "references": [
+ [
+ "/_mozilla/css/pre_ignorable_whitespace_ref.html",
+ "=="
+ ]
+ ],
+ "url": "/_mozilla/css/pre_ignorable_whitespace_a.html"
+ }
+ ],
"css/pre_with_tab.html": [
{
"path": "css/pre_with_tab.html",
diff --git a/tests/ref/pre_ignorable_whitespace_a.html b/tests/wpt/mozilla/tests/css/pre_ignorable_whitespace_a.html
similarity index 72%
rename from tests/ref/pre_ignorable_whitespace_a.html
rename to tests/wpt/mozilla/tests/css/pre_ignorable_whitespace_a.html
index af9eb6ad441..cc11c24dc6d 100644
--- a/tests/ref/pre_ignorable_whitespace_a.html
+++ b/tests/wpt/mozilla/tests/css/pre_ignorable_whitespace_a.html
@@ -1,5 +1,6 @@
+
yaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
diff --git a/tests/ref/pre_ignorable_whitespace_ref.html b/tests/wpt/mozilla/tests/css/pre_ignorable_whitespace_ref.html
similarity index 100%
rename from tests/ref/pre_ignorable_whitespace_ref.html
rename to tests/wpt/mozilla/tests/css/pre_ignorable_whitespace_ref.html