diff --git a/Dockerfile b/Dockerfile
index 7c354d5..e984a74 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -18,12 +18,11 @@ RUN echo "deb http://ftp.debian.org/debian jessie-backports main" >> /etc/apt/so
             haraka \
     && chown -R haraka:haraka /haraka
 
-COPY cron.sh /cron.sh
 COPY haraka.sh /haraka.sh
 COPY supervisord.conf /etc/supervisor/supervisord.conf
 COPY certbot-renew.sh /etc/cron.daily/certbot-renew.sh
 
-RUN chmod +x /cron.sh /haraka.sh /etc/cron.daily/certbot-renew.sh
+RUN chmod +x /haraka.sh /etc/cron.daily/certbot-renew.sh
 
 # Install and Haraka and it's plugins
 USER node
diff --git a/cron.sh b/cron.sh
deleted file mode 100644
index 7c68e6a..0000000
--- a/cron.sh
+++ /dev/null
@@ -1,2 +0,0 @@
-source /etc/default/cron
-/usr/sbin/cron -n
diff --git a/supervisord.conf b/supervisord.conf
index d976741..7f5c0be 100644
--- a/supervisord.conf
+++ b/supervisord.conf
@@ -19,4 +19,4 @@ stdout_logfile=/dev/stdout
 stdout_logfile_maxbytes=0
 stderr_logfile=/dev/stderr
 stderr_logfile_maxbytes=0
-command=/cron.sh
+command=/usr/sbin/cron -n