diff --git a/tests/ref/basic.list b/tests/ref/basic.list
index 609e9768e3b..1661e67a025 100644
--- a/tests/ref/basic.list
+++ b/tests/ref/basic.list
@@ -35,8 +35,6 @@ prefs:"layout.writing-mode.enabled" == iframe/size_attributes_vertical_writing_m
== iframe/stacking_context_position_a.html iframe/stacking_context_position_ref.html
# inline_border_a.html inline_border_b.html
-== inline_whitespace_a.html inline_whitespace_ref.html
-== inline_whitespace_b.html inline_whitespace_ref.html
!= input_height_a.html input_height_ref.html
!= inset_blackborder.html blackborder_ref.html
== jpeg_normal.html jpeg_ref.html
diff --git a/tests/wpt/mozilla/meta/MANIFEST.json b/tests/wpt/mozilla/meta/MANIFEST.json
index 853d172c692..3edfb1a5274 100644
--- a/tests/wpt/mozilla/meta/MANIFEST.json
+++ b/tests/wpt/mozilla/meta/MANIFEST.json
@@ -2075,6 +2075,30 @@
"url": "/_mozilla/css/inline_text_align_a.html"
}
],
+ "css/inline_whitespace_a.html": [
+ {
+ "path": "css/inline_whitespace_a.html",
+ "references": [
+ [
+ "/_mozilla/css/inline_whitespace_ref.html",
+ "=="
+ ]
+ ],
+ "url": "/_mozilla/css/inline_whitespace_a.html"
+ }
+ ],
+ "css/inline_whitespace_b.html": [
+ {
+ "path": "css/inline_whitespace_b.html",
+ "references": [
+ [
+ "/_mozilla/css/inline_whitespace_ref.html",
+ "=="
+ ]
+ ],
+ "url": "/_mozilla/css/inline_whitespace_b.html"
+ }
+ ],
"css/input_button_margins_a.html": [
{
"path": "css/input_button_margins_a.html",
@@ -7056,6 +7080,30 @@
"url": "/_mozilla/css/inline_text_align_a.html"
}
],
+ "css/inline_whitespace_a.html": [
+ {
+ "path": "css/inline_whitespace_a.html",
+ "references": [
+ [
+ "/_mozilla/css/inline_whitespace_ref.html",
+ "=="
+ ]
+ ],
+ "url": "/_mozilla/css/inline_whitespace_a.html"
+ }
+ ],
+ "css/inline_whitespace_b.html": [
+ {
+ "path": "css/inline_whitespace_b.html",
+ "references": [
+ [
+ "/_mozilla/css/inline_whitespace_ref.html",
+ "=="
+ ]
+ ],
+ "url": "/_mozilla/css/inline_whitespace_b.html"
+ }
+ ],
"css/input_button_margins_a.html": [
{
"path": "css/input_button_margins_a.html",
diff --git a/tests/ref/inline_whitespace_a.html b/tests/wpt/mozilla/tests/css/inline_whitespace_a.html
similarity index 82%
rename from tests/ref/inline_whitespace_a.html
rename to tests/wpt/mozilla/tests/css/inline_whitespace_a.html
index f454de56674..930f3b3b016 100644
--- a/tests/ref/inline_whitespace_a.html
+++ b/tests/wpt/mozilla/tests/css/inline_whitespace_a.html
@@ -2,6 +2,7 @@
+