diff --git a/start.letsencrypt.sh b/start.letsencrypt.sh
index 6c48d78..3bce929 100755
--- a/start.letsencrypt.sh
+++ b/start.letsencrypt.sh
@@ -1,5 +1,7 @@
 #!/bin/sh
 
+DATE=`date +%F-%H-%M-%S`
+
 cd /domains
 
 email=$EMAIL
@@ -26,7 +28,9 @@ else
 		DOMAIN=$(jq -r .DOMAIN $i) ;
 		if [[ -f /acme.sh/$DOMAIN/key.pem && -f /acme.sh/$DOMAIN/fullchain.pem && -f /acme.sh/$DOMAIN/cert.pem ]] ; then
 			start_letsencrypt ;
-			touch /acme.sh/$DOMAIN/renew_certificate;
+			if [ find /acme.sh/$DOMAIN/ -type f -newermt "$(date '+%Y-%m-%d %H:%M:%S' -d '1 hour ago')" ]; then 
+				touch /acme.sh/$DOMAIN/renew_certificate;
+			fi
 		else
 			start_letsencrypt;
 			touch /acme.sh/$DOMAIN/new_certificate;