diff --git a/test_wif.sh b/test_wif.sh
index 34c348e..641d9cf 100644
--- a/test_wif.sh
+++ b/test_wif.sh
@@ -20,6 +20,7 @@ gcloud projects get-iam-policy "${PROJECT_ID}" \
 gcloud storage ls "gs://${BUCKET}"
 gcloud storage cp README.md "gs://${BUCKET}/README.md"
 gcloud storage ls "gs://${BUCKET}"
+rm README.downloaded.md
 gcloud storage cp "gs://${BUCKET}/README.md" README.downloaded.md
 cmp README.md README.downloaded.md