diff --git a/tests/wpt/mozilla/meta/MANIFEST.json b/tests/wpt/mozilla/meta/MANIFEST.json
index 4d0e9b89ac2..2188a9ca79a 100644
--- a/tests/wpt/mozilla/meta/MANIFEST.json
+++ b/tests/wpt/mozilla/meta/MANIFEST.json
@@ -816,6 +816,18 @@
             "url": "/_mozilla/css/border_collapse_simple_a.html"
           }
         ],
+        "css/border_inline_split.html": [
+          {
+            "path": "css/border_inline_split.html",
+            "references": [
+              [
+                "/_mozilla/css/border_inline_split_ref.html",
+                "=="
+              ]
+            ],
+            "url": "/_mozilla/css/border_inline_split.html"
+          }
+        ],
         "css/border_radius_asymmetric_sizes_a.html": [
           {
             "path": "css/border_radius_asymmetric_sizes_a.html",
@@ -9958,6 +9970,18 @@
           "url": "/_mozilla/css/border_collapse_simple_a.html"
         }
       ],
+      "css/border_inline_split.html": [
+        {
+          "path": "css/border_inline_split.html",
+          "references": [
+            [
+              "/_mozilla/css/border_inline_split_ref.html",
+              "=="
+            ]
+          ],
+          "url": "/_mozilla/css/border_inline_split.html"
+        }
+      ],
       "css/border_radius_asymmetric_sizes_a.html": [
         {
           "path": "css/border_radius_asymmetric_sizes_a.html",
diff --git a/tests/wpt/mozilla/tests/css/border_inline_split.html b/tests/wpt/mozilla/tests/css/border_inline_split.html
new file mode 100644
index 00000000000..4cf2aaacc11
--- /dev/null
+++ b/tests/wpt/mozilla/tests/css/border_inline_split.html
@@ -0,0 +1,20 @@
+<!doctype html>
+<html><head>
+<link rel=match href=border_inline_split_ref.html>
+<meta content="ahem dom" name="flags">
+<style>
+    div {
+        font: 20px/1 Ahem;
+        width: 7em;
+    }
+    span {
+        border-left: yellow solid 0.5em;
+        border-right: yellow solid 0.5em;
+    }
+</style>
+</head>
+<body>
+    <div>
+        <span>Very long |</span>
+    </div>
+</body></html>
diff --git a/tests/wpt/mozilla/tests/css/border_inline_split_ref.html b/tests/wpt/mozilla/tests/css/border_inline_split_ref.html
new file mode 100644
index 00000000000..658b7f533b6
--- /dev/null
+++ b/tests/wpt/mozilla/tests/css/border_inline_split_ref.html
@@ -0,0 +1,14 @@
+<!doctype html>
+<html><head>
+<meta content="ahem dom" name="flags">
+<style>
+    span {
+        font: 20px/1 Ahem;
+        border-left: yellow solid 0.5em;
+        border-right: yellow solid 0.5em;
+    }
+</style>
+</head>
+<body>
+    <span>Very <br>long |</span>
+</body></html>
