diff --git a/DownloadDCFirmware/update.h b/DownloadDCFirmware/update.h
index f98f2ff..cc8cbc6 100644
--- a/DownloadDCFirmware/update.h
+++ b/DownloadDCFirmware/update.h
@@ -30,7 +30,7 @@ class Update : public QObject {
     QString m_dcFileName{};
     hwinf *m_hw = nullptr;
     bool m_sys_areDCdataValid{};
-    bool m_debug;
+    bool m_debug{false};
     bool m_noaction;
 
     static QPluginLoader pluginLoader;