diff --git a/etc/ci/manifest_changed.sh b/etc/ci/manifest_changed.sh
index 6aeac707396..c596239f3d0 100755
--- a/etc/ci/manifest_changed.sh
+++ b/etc/ci/manifest_changed.sh
@@ -1,4 +1,4 @@
 #!/bin/bash
-diff=$(git diff -- tests/**/MANIFEST.json)
+diff=$(git diff -- tests/wpt/**/MANIFEST.json)
 echo "$diff"
 [[ ! $diff ]]