diff --git a/testing/web-platform/meta/css/css-cascade/scope-nesting.html.ini b/testing/web-platform/meta/css/css-cascade/scope-nesting.html.ini
index b4cf9e96ece0..be65da2a1ecc 100644
--- a/testing/web-platform/meta/css/css-cascade/scope-nesting.html.ini
+++ b/testing/web-platform/meta/css/css-cascade/scope-nesting.html.ini
@@ -28,3 +28,6 @@
 
   [Implicit rule within nested @scope ]
     expected: FAIL
+
+  [Implicit rule within nested @scope (proximity)]
+    expected: FAIL