diff --git a/start.letsencrypt.sh b/start.letsencrypt.sh
index 13c9e58..e7b8642 100755
--- a/start.letsencrypt.sh
+++ b/start.letsencrypt.sh
@@ -27,8 +27,8 @@ else
                 if [[ -f "/acme.sh/$DOMAIN/key.pem" && -f "/acme.sh/$DOMAIN/fullchain.pem" && -f "/acme.sh/$DOMAIN/cert.pem" ]] ; then
                         echo "Found certificate files";
                         start_letsencrypt;           
-                        if [ find /acme.sh/$DOMAIN/ -type f -mmin +60 ]; then
-                                touch /acme.sh/$DOMAIN/renew_certificate;                                                             
+                        if [[ -n "$(find /acme.sh/$DOMAIN/ -type f -mmin +60)" ]]; then
+				touch /acme.sh/$DOMAIN/renew_certificate;                                                             
                         fi                                                   
                 else                                                     
                         start_letsencrypt;