diff --git a/s3.sh b/s3.sh
index f4cc0d7..70deda4 100755
--- a/s3.sh
+++ b/s3.sh
@@ -1,4 +1,4 @@
 #!/bin/bash
 
-[ ! -d "${TUNASYNC_WORKING_DIR}" ] && mkdir -p "${TUNASYNC_WORKING_DIR}"
-aws --no-sign-request --endpoint-url="${TUNASYNC_S3_ENDPOINT}" s3 sync ${TUNASYNC_AWS_OPTIONS} "${TUNASYNC_UPSTREAM_URL}" "${TUNASYNC_WORKING_DIR}"
+[[ ! -d "${TUNASYNC_WORKING_DIR}" ]] && mkdir -p "${TUNASYNC_WORKING_DIR}"
+exec aws --no-sign-request --endpoint-url="${TUNASYNC_S3_ENDPOINT}" s3 sync ${TUNASYNC_AWS_OPTIONS} "${TUNASYNC_UPSTREAM_URL}" "${TUNASYNC_WORKING_DIR}"