diff --git a/sources/configdialog.cpp b/sources/configdialog.cpp
index c211e3669..9b77c423c 100644
--- a/sources/configdialog.cpp
+++ b/sources/configdialog.cpp
@@ -35,7 +35,7 @@ ConfigDialog::ConfigDialog(QWidget *parent) : QDialog(parent) {
 	// liste des pages
 	pages_list = new QListWidget();
 	pages_list -> setViewMode(QListView::IconMode);
-    if(Machine_info::i_max_screen_height()<1000){
+	if(MachineInfo::i_max_screen_height()<1000){
 		pages_list -> setIconSize(QSize(64, 64));
 	} else {
 		pages_list -> setIconSize(QSize(128, 128));
@@ -79,7 +79,7 @@ ConfigDialog::ConfigDialog(QWidget *parent) : QDialog(parent) {
 	connect(pages_list, SIGNAL(currentRowChanged(int)),
 		pages_widget, SLOT(setCurrentIndex(int)));
 
-    setMaximumSize(Machine_info::i_max_screen_width(), Machine_info::i_max_screen_height());
+	setMaximumSize(MachineInfo::i_max_screen_width(), MachineInfo::i_max_screen_height());
 	resize(1400,1000);
 
 #ifdef Q_OS_MACOS
diff --git a/sources/machine_info.cpp b/sources/machine_info.cpp
index 5645d0607..dee608a20 100644
--- a/sources/machine_info.cpp
+++ b/sources/machine_info.cpp
@@ -30,19 +30,19 @@
 #include "qet.h"
 
 /**
-	@brief Machine_info::Machine_info
+	@brief MachineInfo::MachineInfo
 	@param parent
 */
-Machine_info::Machine_info(QObject *parent) : QObject(parent)
+MachineInfo::MachineInfo()
 {
 	init_get_Screen_info();
 	init_get_cpu_info();
 }
 
 /**
-	@brief Machine_info::send_info_to_debug
+	@brief MachineInfo::send_info_to_debug
 */
-void Machine_info::send_info_to_debug()
+void MachineInfo::send_info_to_debug()
 {
 	qInfo()<<"debugging enabled:"
 		<< QLibraryInfo::isDebugBuild();
@@ -120,7 +120,7 @@ void Machine_info::send_info_to_debug()
 #endif
 	qInfo() << "GitRevision " + QString(GIT_COMMIT_SHA);
 	qInfo()<< "QElectroTech V " + QET::displayedVersion;
-	qInfo()<< tr("Compilation : ") + pc.built.version;
+	qInfo()<< QObject::tr("Compilation : ") + pc.built.version;
 	qInfo()<< "Built with Qt " + pc.built.QT
 		  + " - Date : " + pc.built.date
 		  + " : " + pc.built.time;
@@ -151,10 +151,10 @@ void Machine_info::send_info_to_debug()
 }
 
 /**
-	@brief Machine_info::init_get_Screen_info
+	@brief MachineInfo::init_get_Screen_info
 	Finds the largest screen and saves the values
 */
-void Machine_info::init_get_Screen_info()
+void MachineInfo::init_get_Screen_info()
 {
 	const auto screens = qApp->screens();
 	pc.screen.count=screens.count();
@@ -174,9 +174,9 @@ void Machine_info::init_get_Screen_info()
 }
 
 /**
-	@brief Machine_info::init_get_cpu_info
+	@brief MachineInfo::init_get_cpu_info
 */
-void Machine_info::init_get_cpu_info()
+void MachineInfo::init_get_cpu_info()
 {
 #ifdef __GNUC__
 #ifdef __APPLE_CC__
@@ -191,9 +191,9 @@ void Machine_info::init_get_cpu_info()
 }
 
 /**
-	@brief Machine_info::init_get_cpu_info_linux
+	@brief MachineInfo::init_get_cpu_info_linux
 */
-void Machine_info::init_get_cpu_info_linux()
+void MachineInfo::init_get_cpu_info_linux()
 {
 	QProcess linuxcpuinfo;
 	linuxcpuinfo.start("bash", QStringList()
@@ -237,9 +237,9 @@ void Machine_info::init_get_cpu_info_linux()
 }
 
 /**
-	@brief Machine_info::init_get_cpu_info_winnt
+	@brief MachineInfo::init_get_cpu_info_winnt
 */
-void Machine_info::init_get_cpu_info_winnt()
+void MachineInfo::init_get_cpu_info_winnt()
 {
 	QProcess wincpuinfo;
 	wincpuinfo.start("wmic",
@@ -291,9 +291,9 @@ void Machine_info::init_get_cpu_info_winnt()
 }
 
 /**
-	@brief Machine_info::init_get_cpu_info_macos
+	@brief MachineInfo::init_get_cpu_info_macos
 */
-void Machine_info::init_get_cpu_info_macos()
+void MachineInfo::init_get_cpu_info_macos()
 {
 	QProcess macoscpuinfo;
 	macoscpuinfo.start("bash",
@@ -317,10 +317,10 @@ void Machine_info::init_get_cpu_info_macos()
 }
 
 /**
-	@brief Machine_info::i_max_screen_width
+	@brief MachineInfo::i_max_screen_width
 	@return max screen width
 */
-int32_t Machine_info::i_max_screen_width()
+int32_t MachineInfo::i_max_screen_width()
 {
     const auto screens = qApp->screens();
     auto screen_count = screens.count();
@@ -341,10 +341,10 @@ int32_t Machine_info::i_max_screen_width()
 }
 
 /**
-	@brief Machine_info::i_max_screen_height
+	@brief MachineInfo::i_max_screen_height
 	@return max screen height
 */
-int32_t Machine_info::i_max_screen_height()
+int32_t MachineInfo::i_max_screen_height()
 {    
     const auto screens = qApp->screens();
     auto screen_count = screens.count();
@@ -365,12 +365,12 @@ int32_t Machine_info::i_max_screen_height()
 }
 
 /**
-	@brief Machine_info::compilation_info
+	@brief MachineInfo::compilation_info
 	@return compilation_info
 */
-QString Machine_info::compilation_info()
+QString MachineInfo::compilation_info()
 {
-	QString compilation_info = "<br />" + tr("Compilation :   ");
+	QString compilation_info = "<br />" + QObject::tr("Compilation :   ");
 	compilation_info +=pc.built.version;
 	compilation_info += "<br>Built with Qt " + pc.built.QT;
 	compilation_info += " - Date : " + pc.built.date;
diff --git a/sources/machine_info.h b/sources/machine_info.h
index 99b3d46f5..acf50378f 100644
--- a/sources/machine_info.h
+++ b/sources/machine_info.h
@@ -18,31 +18,27 @@
 #ifndef MACHINE_INFO_H
 #define MACHINE_INFO_H
 
-#include <QObject>
 #include <QThread>
 
 /**
-	@brief The Machine_info class
+	@brief The MachineInfo class
 	This class hold information from your PC.
 */
-class Machine_info : public QObject
+class MachineInfo
 {
-	Q_OBJECT
-public:
-	explicit Machine_info(QObject *parent = nullptr);
-    static int32_t i_max_screen_width();
-    static int32_t i_max_screen_height();
-	QString compilation_info();
-	void send_info_to_debug();
+	public:
+		explicit MachineInfo();
+		static int32_t i_max_screen_width();
+		static int32_t i_max_screen_height();
+		QString compilation_info();
+		void send_info_to_debug();
 
-signals:
-
-private:
-	void init_get_Screen_info();
-	void init_get_cpu_info();
-	void init_get_cpu_info_linux();
-	void init_get_cpu_info_winnt();
-	void init_get_cpu_info_macos();
+	private:
+		void init_get_Screen_info();
+		void init_get_cpu_info();
+		void init_get_cpu_info_linux();
+		void init_get_cpu_info_winnt();
+		void init_get_cpu_info_macos();
 	struct Pc
 	{
 		struct Screen
diff --git a/sources/main.cpp b/sources/main.cpp
index 0ac7a6343..45da16bd5 100644
--- a/sources/main.cpp
+++ b/sources/main.cpp
@@ -208,7 +208,7 @@ int main(int argc, char **argv)
         qInfo("Start-up");
             // delete old log files of max 7 days old.
         delete_old_log_files(7);
-        Machine_info ma;
+		MachineInfo ma;
         ma.send_info_to_debug();
     });
 	return app.exec();
diff --git a/sources/ui/aboutqetdialog.cpp b/sources/ui/aboutqetdialog.cpp
index cf585ad64..e7c85a8a1 100644
--- a/sources/ui/aboutqetdialog.cpp
+++ b/sources/ui/aboutqetdialog.cpp
@@ -152,8 +152,8 @@ void AboutQETDialog::setVersion()
 	QString str = "<span style=\"font-weight:bold;font-size:16pt;\">QElectroTech V "
 			+ QET::displayedVersion
 			+ "</span>";
-	Machine_info *my_ma =new Machine_info(this);
-	ui->m_version_label->setText(str + my_ma->compilation_info());
+	MachineInfo mi_;
+	ui->m_version_label->setText(str + mi_.compilation_info());
 }
 
 /**