diff --git a/tests/wpt/metadata/encoding/unsupported-labels.window.js.ini b/tests/wpt/metadata/encoding/unsupported-labels.window.js.ini
index 2298d463d44..a929b0cb2ad 100644
--- a/tests/wpt/metadata/encoding/unsupported-labels.window.js.ini
+++ b/tests/wpt/metadata/encoding/unsupported-labels.window.js.ini
@@ -1,2 +1,3 @@
 [unsupported-labels.window.html]
   expected: TIMEOUT
+  disabled: enormous number of timeouts