diff --git a/scripts/install/ubuntu.sh b/scripts/install/ubuntu.sh
index 81d8e088e..628234c3a 100644
--- a/scripts/install/ubuntu.sh
+++ b/scripts/install/ubuntu.sh
@@ -14,7 +14,7 @@ mkdir -p /www/backup/site
 
 apt install -y wget curl vixie-cron lsof iptables
 
-if [ ! -f /root/.acme.sh ];then	
+if [ ! -d /root/.acme.sh ];then	
 	curl  https://get.acme.sh | sh
 fi