diff --git a/Dockerfile b/Dockerfile
index 18d2099..8da09dd 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -28,7 +28,6 @@ ENV RESTIC_JOB_ARGS=""
 VOLUME /data
 
 COPY backup.sh /bin/backup
-RUN chmod +x /bin/backup
 
 COPY entry.sh /entry.sh
 
diff --git a/backup.sh b/backup.sh
old mode 100644
new mode 100755