diff --git a/tests/ref/basic.list b/tests/ref/basic.list
index 70760a141aa..59a0967f320 100644
--- a/tests/ref/basic.list
+++ b/tests/ref/basic.list
@@ -131,7 +131,6 @@ prefs:"layout.writing-mode.enabled" == iframe/size_attributes_vertical_writing_m
== inline_block_margin_auto_a.html inline_block_margin_auto_ref.html
== inline_block_margin_auto_zero_a.html inline_block_margin_auto_zero_ref.html
== inline_block_min_width.html inline_block_min_width_ref.html
-== inline_block_overflow.html inline_block_overflow_ref.html
== inline_block_overflow_hidden_a.html inline_block_overflow_hidden_ref.html
== inline_block_parent_padding_a.html inline_block_parent_padding_ref.html
== inline_block_parent_width.html inline_block_parent_width_ref.html
diff --git a/tests/wpt/mozilla/meta/MANIFEST.json b/tests/wpt/mozilla/meta/MANIFEST.json
index 8357275b444..3eb3a07f5f6 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/inline_block_overflow.html": [
+ {
+ "path": "css/inline_block_overflow.html",
+ "references": [
+ [
+ "/_mozilla/css/inline_block_overflow_ref.html",
+ "=="
+ ]
+ ],
+ "url": "/_mozilla/css/inline_block_overflow.html"
+ }
+ ],
"css/inline_border_baseline_a.html": [
{
"path": "css/inline_border_baseline_a.html",
@@ -3936,6 +3948,18 @@
"url": "/_mozilla/css/flex_nochild.html"
}
],
+ "css/inline_block_overflow.html": [
+ {
+ "path": "css/inline_block_overflow.html",
+ "references": [
+ [
+ "/_mozilla/css/inline_block_overflow_ref.html",
+ "=="
+ ]
+ ],
+ "url": "/_mozilla/css/inline_block_overflow.html"
+ }
+ ],
"css/inline_border_baseline_a.html": [
{
"path": "css/inline_border_baseline_a.html",
diff --git a/tests/ref/inline_block_overflow.html b/tests/wpt/mozilla/tests/css/inline_block_overflow.html
similarity index 77%
rename from tests/ref/inline_block_overflow.html
rename to tests/wpt/mozilla/tests/css/inline_block_overflow.html
index 5b5aa9d0130..8646a2dacaf 100644
--- a/tests/ref/inline_block_overflow.html
+++ b/tests/wpt/mozilla/tests/css/inline_block_overflow.html
@@ -1,5 +1,6 @@
+
ab
diff --git a/tests/ref/inline_block_overflow_ref.html b/tests/wpt/mozilla/tests/css/inline_block_overflow_ref.html
similarity index 100%
rename from tests/ref/inline_block_overflow_ref.html
rename to tests/wpt/mozilla/tests/css/inline_block_overflow_ref.html