diff --git a/testing/web-platform/meta/css/css-box/parsing/padding-valid.html.ini b/testing/web-platform/meta/css/css-box/parsing/padding-valid.html.ini
new file mode 100644
index 000000000000..d20bd965783e
--- /dev/null
+++ b/testing/web-platform/meta/css/css-box/parsing/padding-valid.html.ini
@@ -0,0 +1,4 @@
+[padding-valid.html]
+  [e.style['padding-right'\] = "calc(2em + 3%)" should set the property value]
+    expected: FAIL
+