diff --git a/scripts/run_certbot.sh b/scripts/run_certbot.sh
index 4287eba..e76b26c 100755
--- a/scripts/run_certbot.sh
+++ b/scripts/run_certbot.sh
@@ -38,7 +38,7 @@ if [ $WEBROOT ]
 then
   args=" --webroot -w $WEBROOT"
 else
-  args=" --standalone --standalone-supported-challenges http-01"
+  args=" --standalone --preferred-challenges http-01"
 fi
 
 if $DEBUG