diff --git a/renew_cert.sh b/renew_cert.sh
index 4ef4212..9c19359 100644
--- a/renew_cert.sh
+++ b/renew_cert.sh
@@ -14,7 +14,7 @@ openssl_conf=$opt_dir/openssl.conf
 # script
 
 
-# stop script if receive SIGINT signal (ctrl-c)
+# stop script if receive SIGINT (ctrl-c)
 trap "exit" INT
 
 #print starting date
@@ -122,7 +122,7 @@ do
   fi
 
   # get certificate
-  python "$acme_tiny" --account-key "$account_key" --csr "$csr" --acme-dir "$acme_dir" > "$arg/tmp.pem"
+  python "$acme_tiny" --quiet --account-key "$account_key" --csr "$csr" --acme-dir "$acme_dir" > "$arg/tmp.pem"
 
   if [ $? != 0 ]; then
     rm -rf $arg/tmp.pem