diff --git a/dns-updater.service b/dns-updater.service
index 6dc1a24..deaca59 100644
--- a/dns-updater.service
+++ b/dns-updater.service
@@ -8,7 +8,7 @@ Group=root
 WorkingDirectory=/opt/dns-updater
 Environment="MIAB_HOST=box.koszewscy.waw.pl"
 Environment="STORAGE_ROOT=/miab-data"
-ExecStart=/usr/bin/gunicorn --workers 4 --bind 0.0.0.0:8443 --certfile=$STORAGE_ROOT/ssl/ssl_certificate.pem --keyfile=$STORAGE_ROOT/ssl/ssl_private_key.pem app:app
+ExecStart=/bin/sh -c '/usr/bin/gunicorn --workers 4 --bind 0.0.0.0:8443 --certfile="$STORAGE_ROOT/ssl/ssl_certificate.pem" --keyfile="$STORAGE_ROOT/ssl/ssl_private_key.pem" app:app'
 Restart=always
 
 [Install]