diff --git a/backup.sh b/backup.sh
index aeaaf5a..5482ef2 100755
--- a/backup.sh
+++ b/backup.sh
@@ -3,7 +3,7 @@
 # Retention follows BACKUP_RETENTION_DAYS from .env (default 3)
 
 set -euo pipefail
-INSTALL_DIR="$(cd "$(dirname "$0")/.." && pwd)"
+INSTALL_DIR="$(cd "$(dirname "$0")" && pwd)"
 BACKUP_DIR="${INSTALL_DIR}/data/backups"
 ENV_FILE="${INSTALL_DIR}/.env"