diff --git a/acme.sh b/acme.sh
index 10a44fa3..cc4c0dbb 100755
--- a/acme.sh
+++ b/acme.sh
@@ -5454,7 +5454,10 @@ renew() {
   . "$DOMAIN_CONF"
   _debug Le_API "$Le_API"
 
-  if [ -z "$STAGE" ]; then
+  if [ "$STAGE" ]; then
+    _info "Switching to $DEFAULT_STAGING_CA"
+    $Le_API="$DEFAULT_STAGING_CA"
+  else
     case "$Le_API" in
     "$CA_LETSENCRYPT_V2_TEST")
       _info "Switching back to $CA_LETSENCRYPT_V2"