diff --git a/start.letsencrypt.sh b/start.letsencrypt.sh
index b3d9925..6c48d78 100755
--- a/start.letsencrypt.sh
+++ b/start.letsencrypt.sh
@@ -24,8 +24,13 @@ if [ -n "$LETSENCRYPT_FILE" ] ; then
 else 
 	for i in `ls` ; do
 		DOMAIN=$(jq -r .DOMAIN $i) ;
-		start_letsencrypt;
-		touch /acme.sh/$DOMAIN/new_certificate
+		if [[ -f /acme.sh/$DOMAIN/key.pem && -f /acme.sh/$DOMAIN/fullchain.pem && -f /acme.sh/$DOMAIN/cert.pem ]] ; then
+			start_letsencrypt ;
+			touch /acme.sh/$DOMAIN/renew_certificate;
+		else
+			start_letsencrypt;
+			touch /acme.sh/$DOMAIN/new_certificate;
+		fi
 	done ;
 fi