diff --git a/urlpattern/resources/urlpatterntestdata.json b/urlpattern/resources/urlpatterntestdata.json
index 3acb8a7d1714e2..69fa7466c4d120 100644
--- a/urlpattern/resources/urlpatterntestdata.json
+++ b/urlpattern/resources/urlpatterntestdata.json
@@ -2370,11 +2370,17 @@
   },
   {
     "pattern": [{ "hostname": "bad#hostname" }],
-    "expected_obj": "error"
+    "exactly_empty_components": ["port"],
+    "expected_match": {
+      "hostname": { "input": "bad", "groups": {} }
+    }
   },
   {
     "pattern": [{ "hostname": "bad%hostname" }],
-    "expected_obj": "error"
+    "exactly_empty_components": ["port"],
+    "expected_match": {
+      "hostname": { "input": "bad%hostname", "groups": {} }
+    }
   },
   {
     "pattern": [{ "hostname": "bad/hostname" }],