1 files changed, 2 insertions, 1 deletions
diff --git a/tests/wpt/web-platform-tests/css/support/inheritance-testcommon.js b/tests/wpt/web-platform-tests/css/support/inheritance-testcommon.js
index 8d1645f9b11..38ac94eb12e 100644
--- a/tests/wpt/web-platform-tests/css/support/inheritance-testcommon.js
+++ b/tests/wpt/web-platform-tests/css/support/inheritance-testcommon.js
@@ -33,7 +33,8 @@ function assert_initial(property, initial) {
  *                                  value.
  */
 function assert_inherited(property, initial, other) {
-  assert_initial(property, initial);
+  if (initial)
+    assert_initial(property, initial);
 
   test(() => {
     const container = document.getElementById('container');