diff --git a/src/bidiMapper/domains/script/Realm.ts b/src/bidiMapper/domains/script/Realm.ts
index da64ce93b9..19945dd6f6 100644
--- a/src/bidiMapper/domains/script/Realm.ts
+++ b/src/bidiMapper/domains/script/Realm.ts
@@ -170,6 +170,10 @@ export class Realm {
       ) {
         bidiValue.shadowRoot = this.#deepSerializedToBiDi(bidiValue.shadowRoot);
       }
+      // `namespaceURI` can be is either `null` or non-empty string.
+      if (bidiValue.namespaceURI === '') {
+        bidiValue.namespaceURI = null;
+      }
     }
 
     // Recursively update the nested values.
diff --git a/wpt-metadata/chromedriver/headless/webdriver/tests/bidi/script/call_function/result_node.py.ini b/wpt-metadata/chromedriver/headless/webdriver/tests/bidi/script/call_function/result_node.py.ini
deleted file mode 100644
index 23bbba0662..0000000000
--- a/wpt-metadata/chromedriver/headless/webdriver/tests/bidi/script/call_function/result_node.py.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[result_node.py]
-  [test_attribute_node[basic\]]
-    expected: FAIL
diff --git a/wpt-metadata/chromedriver/headless/webdriver/tests/bidi/script/evaluate/result_node.py.ini b/wpt-metadata/chromedriver/headless/webdriver/tests/bidi/script/evaluate/result_node.py.ini
deleted file mode 100644
index 23bbba0662..0000000000
--- a/wpt-metadata/chromedriver/headless/webdriver/tests/bidi/script/evaluate/result_node.py.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[result_node.py]
-  [test_attribute_node[basic\]]
-    expected: FAIL
diff --git a/wpt-metadata/mapper/headful/webdriver/tests/bidi/script/call_function/result_node.py.ini b/wpt-metadata/mapper/headful/webdriver/tests/bidi/script/call_function/result_node.py.ini
deleted file mode 100644
index 23bbba0662..0000000000
--- a/wpt-metadata/mapper/headful/webdriver/tests/bidi/script/call_function/result_node.py.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[result_node.py]
-  [test_attribute_node[basic\]]
-    expected: FAIL
diff --git a/wpt-metadata/mapper/headful/webdriver/tests/bidi/script/evaluate/result_node.py.ini b/wpt-metadata/mapper/headful/webdriver/tests/bidi/script/evaluate/result_node.py.ini
deleted file mode 100644
index 23bbba0662..0000000000
--- a/wpt-metadata/mapper/headful/webdriver/tests/bidi/script/evaluate/result_node.py.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[result_node.py]
-  [test_attribute_node[basic\]]
-    expected: FAIL
diff --git a/wpt-metadata/mapper/headless/webdriver/tests/bidi/script/call_function/result_node.py.ini b/wpt-metadata/mapper/headless/webdriver/tests/bidi/script/call_function/result_node.py.ini
deleted file mode 100644
index 23bbba0662..0000000000
--- a/wpt-metadata/mapper/headless/webdriver/tests/bidi/script/call_function/result_node.py.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[result_node.py]
-  [test_attribute_node[basic\]]
-    expected: FAIL
diff --git a/wpt-metadata/mapper/headless/webdriver/tests/bidi/script/evaluate/result_node.py.ini b/wpt-metadata/mapper/headless/webdriver/tests/bidi/script/evaluate/result_node.py.ini
deleted file mode 100644
index 23bbba0662..0000000000
--- a/wpt-metadata/mapper/headless/webdriver/tests/bidi/script/evaluate/result_node.py.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[result_node.py]
-  [test_attribute_node[basic\]]
-    expected: FAIL