diff --git a/acme.sh b/acme.sh
index 8baee588..30a5a826 100755
--- a/acme.sh
+++ b/acme.sh
@@ -2328,8 +2328,8 @@ _calc_cert_id() {
     _err "Failed to parse certificate Authority Key Identifier"
     return 1
   fi
-  _cert_id="$_cert_authority_kid.$_cert_serial"
-  _debug2 "Certificate ID for Renewal Info: $_cert_id"
+  Le_RenewalInfoCertId="$_cert_authority_kid.$_cert_serial"
+  _debug2 "Certificate ID for Renewal Info: $Le_RenewalInfoCertId"
   return 0
 }