diff --git a/UpdatePTUDevCtrl/update.cpp b/UpdatePTUDevCtrl/update.cpp
index 93c5457..0b5cc14 100644
--- a/UpdatePTUDevCtrl/update.cpp
+++ b/UpdatePTUDevCtrl/update.cpp
@@ -651,6 +651,7 @@ bool Update::checkDownloadedJsonVersions(QStringList const& jsonFileNames) {
                 bool ok = false;
                 int n = captured.toInt(&ok);
                 if (ok) {
+                    // note: the '5' is correct
                     jsonNr = n + 5;
                 }
             }