diff --git a/partner-simplepay.js b/partner-simplepay.js
index 3818a8a..73b15cb 100644
--- a/partner-simplepay.js
+++ b/partner-simplepay.js
@@ -429,7 +429,7 @@ function createReverseHttpServer() {
 
         if (rc === '40') {
             const partnerRC = getPartnerRCFromDiagMessage(diag);
-            if (partnerRC == '15') {
+            if (['14', '15'].indexOf(partnerRC) >= 0) {
                 rc = '14';
             }
         }