diff --git a/acme.sh b/acme.sh
index 8ee22479..005b1333 100755
--- a/acme.sh
+++ b/acme.sh
@@ -4886,7 +4886,7 @@ _installcert() {
       export CERT_KEY_PATH
       export CA_CERT_PATH
       export CERT_FULLCHAIN_PATH
-      export Le_Domain
+      export Le_Domain="$_main_domain"
       cd "$DOMAIN_PATH" && eval "$_reload_cmd"
     ); then
       _info "$(__green "Reload success")"