diff --git a/debian/resources/letsencrypt.sh b/debian/resources/letsencrypt.sh
index e490d6f..dd486d9 100755
--- a/debian/resources/letsencrypt.sh
+++ b/debian/resources/letsencrypt.sh
@@ -92,8 +92,8 @@ fi
 mkdir -p /etc/nginx/ssl
 
 #update nginx config
-sed "s@ssl_certificate         /etc/ssl/certs/nginx.crt;@ssl_certificate /etc/dehydrated/certs/$domain_alias/fullchain.pem;@g" -i /etc/nginx/sites-available/fusionpbx
-sed "s@ssl_certificate_key     /etc/ssl/private/nginx.key;@ssl_certificate_key /etc/dehydrated/certs/$domain_alias/privkey.pem;@g" -i /etc/nginx/sites-available/fusionpbx
+sed "s@ssl_certificate[ \t]*/etc/ssl/certs/nginx.crt;@ssl_certificate /etc/dehydrated/certs/$domain_alias/fullchain.pem;@g" -i /etc/nginx/sites-available/fusionpbx
+sed "s@ssl_certificate_key[ \t]*/etc/ssl/private/nginx.key;@ssl_certificate_key /etc/dehydrated/certs/$domain_alias/privkey.pem;@g" -i /etc/nginx/sites-available/fusionpbx
 
 #read the config
 /usr/sbin/nginx -t && /usr/sbin/nginx -s reload