diff --git a/Procfile b/Procfile
index f2b293a..14b25ad 100644
--- a/Procfile
+++ b/Procfile
@@ -1,4 +1,4 @@
 dockergen: docker-gen -watch -notify "/app/updatessl.sh updatessl" /app/nginx.tmpl /etc/nginx/conf.d/default.conf
 nginx: nginx
-cron: cron
+cron: cron && tail -f /dev/null
 
diff --git a/updatessl.sh b/updatessl.sh
index deb7e53..5ebd831 100755
--- a/updatessl.sh
+++ b/updatessl.sh
@@ -19,8 +19,8 @@ updatessl() {
       $ACME_BIN --issue \
       -d $d_list \
       --nginx \
-      --fullchain-file "$CERTS\$d.crt" \
-      --key-file "$CERTS\$d.crt" \
+      --fullchain-file "$CERTS/$d.crt" \
+      --key-file "$CERTS/$d.key" \
       --reloadcmd "service nginx configtest && service force-reload"
     done