diff --git a/testing/web-platform/meta/mediacapture-record/idlharness.html.ini b/testing/web-platform/meta/mediacapture-record/idlharness.html.ini
index 6487f0858e9a..5b8f14d24ced 100644
--- a/testing/web-platform/meta/mediacapture-record/idlharness.html.ini
+++ b/testing/web-platform/meta/mediacapture-record/idlharness.html.ini
@@ -30,21 +30,3 @@
   [BlobEvent interface: attribute timecode]
     expected: FAIL
 
-  [MediaRecorderErrorEvent interface: existence and properties of interface object]
-    expected: FAIL
-
-  [MediaRecorderErrorEvent interface object length]
-    expected: FAIL
-
-  [MediaRecorderErrorEvent interface object name]
-    expected: FAIL
-
-  [MediaRecorderErrorEvent interface: existence and properties of interface prototype object]
-    expected: FAIL
-
-  [MediaRecorderErrorEvent interface: existence and properties of interface prototype object's "constructor" property]
-    expected: FAIL
-
-  [MediaRecorderErrorEvent interface: attribute error]
-    expected: FAIL
-