diff --git a/components/script/dom/htmlmediaelement.rs b/components/script/dom/htmlmediaelement.rs
index 928c0ed6e93..951f6e47b70 100644
--- a/components/script/dom/htmlmediaelement.rs
+++ b/components/script/dom/htmlmediaelement.rs
@@ -357,7 +357,7 @@ impl HTMLMediaElement {
             ResourceSelectionMode::Attribute(src) => {
                 // Step 1
                 if src.is_empty() {
-                    // TODO failed with attribute
+                    self.queue_dedicated_media_source_failure_steps();
                     return;
                 }
 
diff --git a/tests/wpt/metadata/html/semantics/embedded-content/media-elements/error-codes/error.html.ini b/tests/wpt/metadata/html/semantics/embedded-content/media-elements/error-codes/error.html.ini
deleted file mode 100644
index 92d9425aabf..00000000000
--- a/tests/wpt/metadata/html/semantics/embedded-content/media-elements/error-codes/error.html.ini
+++ /dev/null
@@ -1,9 +0,0 @@
-[error.html]
-  type: testharness
-  expected: TIMEOUT
-  [audio.error after setting src to the empty string]
-    expected: TIMEOUT
-
-  [video.error after setting src to the empty string]
-    expected: TIMEOUT
-