diff --git a/BUILD.gn b/BUILD.gn
index e59f34c0e230d..a12740b6e7faf 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -1211,6 +1211,7 @@ if (!is_ios) {
   _common_web_test_args += [
     "--seed",
     "4",
+    "--debug-rwt-logging",
     "--no-show-results",
     "--zero-tests-executed-ok",
     "--clobber-old-results",