diff --git a/files/sbin/certbot_renew b/files/sbin/certbot_renew
index 8040385..d903d06 100644
--- a/files/sbin/certbot_renew
+++ b/files/sbin/certbot_renew
@@ -2,4 +2,4 @@
 
 /usr/bin/env sleep $(($RANDOM % 3600));
 /opt/certbot/bin/pip install --upgrade certbot certbot-nginx certbot-dns-ovh
-/usr/bin/env certbot renew
+/usr/bin/env certbot renew --cert-name netoik.io
diff --git a/netoik-rp.spec b/netoik-rp.spec
index 4ac52fa..64483f8 100644
--- a/netoik-rp.spec
+++ b/netoik-rp.spec
@@ -23,41 +23,41 @@ Install the reverse proxy called nginx with a predefined configuration and with
 
 %post
 # Replace secrets in ovh.ini
-%{_bindir}/env envsubst < %{_sysconfdir}/certbot/ovh.ini > %{_sysconfdir}/certbot/.ovh.ini.new
-if %{_bindir}/env cmp --silent %{_sysconfdir}/certbot/.ovh.ini.new %{_sysconfdir}/certbot/ovh.ini; then
-	%{_bindir}/env rm %{_sysconfdir}/certbot/.ovh.ini.new
+envsubst < %{_sysconfdir}/certbot/ovh.ini > %{_sysconfdir}/certbot/.ovh.ini.new
+if cmp --silent %{_sysconfdir}/certbot/.ovh.ini.new %{_sysconfdir}/certbot/ovh.ini; then
+	rm %{_sysconfdir}/certbot/.ovh.ini.new
 else
-	%{_bindir}/env mv %{_sysconfdir}/certbot/.ovh.ini.new %{_sysconfdir}/certbot/ovh.ini
-	%{_bindir}/env chmod 600 %{_sysconfdir}/certbot/ovh.ini
+	mv %{_sysconfdir}/certbot/.ovh.ini.new %{_sysconfdir}/certbot/ovh.ini
+	chmod 600 %{_sysconfdir}/certbot/ovh.ini
 fi
 
 # Create virtualenv with certot
 if [ ! -d "/opt/certbot" ]; then
-	%{_bindir}/env python3 -m venv /opt/certbot
+	python3 -m venv /opt/certbot
 	/opt/certbot/bin/pip install --upgrade pip certbot certbot-nginx certbot-dns-ovh
-	%{_bindir}/env ln --symbolic --force --target-directory %{_sbindir} /opt/certbot/bin/certbot
+	ln --symbolic --force --target-directory %{_sbindir} /opt/certbot/bin/certbot
 fi
 
 # Create certbot certificates
-if [ ! -d "%{_sysconfdir}/letsencrypt/live/netoik.io" ] || [ ! -d "%{_sysconfdir}/letsencrypt/live/samuel-campos.fr" ]; then
-	%{_bindir}/env certbot certonly --non-interactive --agree-tos --email "samuel.campos@netoik.io" --dns-ovh --dns-ovh-credentials "%{_sysconfdir}/certbot/ovh.ini" -d "*.netoik.io" -d "*.samuel-campos.fr"
+if ! certbot certificates --cert-name netoik.io | grep --quiet netoik.io; then
+	certbot certonly --cert-name netoik.io --non-interactive --agree-tos --email samuel.campos@netoik.io --dns-ovh --dns-ovh-credentials %{_sysconfdir}/certbot/ovh.ini -d *.netoik.io -d *.samuel-campos.fr
 fi
 
 # Create ssl dh params if not already exists
 if [ ! -f "%{_sysconfdir}/letsencrypt/ssl-dhparams.pem" ]; then
-	%{_bindir}/env openssl dhparam -out %{_sysconfdir}/letsencrypt/ssl-dhparams.pem 2048
+	openssl dhparam -out %{_sysconfdir}/letsencrypt/ssl-dhparams.pem 2048
 fi
 
 # Restart services
-%{_bindir}/env systemctl daemon-reload
-%{_bindir}/env systemctl reenable --now nginx.service certbot-renew.timer
+systemctl daemon-reload
+systemctl reenable --now nginx.service certbot-renew.timer
 
 %postun
 # Remove folders after uninstall
 if [ $1 == 0 ]; then
-  %{_bindir}/env rm --recursive --force /opt/certbot
-  %{_bindir}/env rm --recursive --force %{_sysconfdir}/certbot
-  %{_bindir}/env rm --recursive --force %{_sysconfdir}/letsencrypt
+  certbot delete --cert-name netoik.io
+	rm --recursive --force /opt/certbot
+  rm --recursive --force %{_sysconfdir}/certbot
 fi
 
 %files
@@ -74,7 +74,6 @@ fi
 
 %ghost %attr(755, root, root) %dir /opt/certbot
 %ghost %attr(755, root, root) %{_sbindir}/certbot
-%ghost %attr(755, root, root) %dir %{_sysconfdir}/letsencrypt
 %ghost %attr(644, root, root) %{_sysconfdir}/letsencrypt/ssl-dhparams.pem
 
 %changelog