diff --git a/update.cpp b/update.cpp
index 92865fd..66d9770 100644
--- a/update.cpp
+++ b/update.cpp
@@ -14,9 +14,9 @@
 #include <QRegExp>
 #include <QApplication>
 
-//#include <iostream>
-//#include <fstream>
-//#include <ctime>
+#if defined (Q_OS_UNIX) || defined (Q_OS_LINUX)
+#include "unistd.h"
+#endif
 
 #include "plugins/interfaces.h"
 
@@ -742,6 +742,9 @@ bool Update::doUpdate(int &displayIndex, QStringList const &filesToWorkOn) {
 
     QString const &parentName = Utils::getParentName();
 
+    Utils::printInfoMsg(
+        QString("PARENT OF ATB-UPDATE-TOOL (ppid=%1) ").arg(getppid()) + parentName);
+
     if (parentName == "ATBQT" || parentName == "systemd") {
         // the tool was not called during 'service' ot during an automatic
         // update procedure. and it was called explicitly with libCAmaster.so