diff --git a/QtFixer/Mp3FileListItem.h b/QtFixer/Mp3FileListItem.h
index bf60592..a2ba0ff 100644
--- a/QtFixer/Mp3FileListItem.h
+++ b/QtFixer/Mp3FileListItem.h
@@ -22,7 +22,7 @@
 #ifndef MP3FILELISTITEM_H
 #define MP3FILELISTITEM_H
 
-#include <QtGui>
+#include <QtWidgets>
 #include "VbrfixMain.h"
 
 class Mp3FileListItem : public QTreeWidgetItem
diff --git a/QtFixer/Options.h b/QtFixer/Options.h
index 9939c3e..6c95dbd 100644
--- a/QtFixer/Options.h
+++ b/QtFixer/Options.h
@@ -23,7 +23,7 @@
 #define OPTIONS_H
 
 #include "FixerSettings.h"
-#include <QtGui>
+#include <QtWidgets>
 
 class QWidget;
 
diff --git a/QtFixer/QtFixer.pro b/QtFixer/QtFixer.pro
index 92693fb..4f661ba 100644
--- a/QtFixer/QtFixer.pro
+++ b/QtFixer/QtFixer.pro
@@ -3,6 +3,7 @@
 # Subdir relative project main directory: ./QtFixer
 # Target is an application:  VbrfixGui
 
+QT += widgets
 FORMS += settings.ui \
          vbrfixui.ui \
          about.ui \
diff --git a/QtFixer/VbrfixAbout.h b/QtFixer/VbrfixAbout.h
index 765f39c..f1c76a0 100644
--- a/QtFixer/VbrfixAbout.h
+++ b/QtFixer/VbrfixAbout.h
@@ -22,7 +22,7 @@
 #ifndef VBRFIXABOUT_H
 #define VBRFIXABOUT_H
 
-#include <QtGui>
+#include <QtWidgets>
 #include "ui_about.h"
 
 class VbrfixAbout: public QDialog, public Ui_AboutDialog
diff --git a/QtFixer/VbrfixGetHeaderInfo.h b/QtFixer/VbrfixGetHeaderInfo.h
index f023ed8..2da59d2 100755
--- a/QtFixer/VbrfixGetHeaderInfo.h
+++ b/QtFixer/VbrfixGetHeaderInfo.h
@@ -22,7 +22,7 @@
 #ifndef VBRFIXGETHEADERINFO_H
 #define VBRFIXGETHEADERINFO_H
 
-#include <QtGui>
+#include <QtWidgets>
 #include "ui_mp3headerInfo.h"
 
 class VbrfixGetHeaderInfo: public QDialog, public Ui_GetMp3HeaderInfo
diff --git a/QtFixer/VbrfixMain.cpp b/QtFixer/VbrfixMain.cpp
index 0d7a0c7..89e606f 100644
--- a/QtFixer/VbrfixMain.cpp
+++ b/QtFixer/VbrfixMain.cpp
@@ -120,7 +120,7 @@ void VbrfixMain::fixAnother()
 			m_pFixThread = NULL;
 		}
 		m_pFixThread = new VbrfixThread(m_Options, fixItem->getFileName());
-		bool bOK = connect(m_pFixThread, SIGNAL(guiEvent(int)), this, SLOT(threadGuiEvent(int)));
+		bool bOK = connect(m_pFixThread, &VbrfixThread::guiEvent, this, &VbrfixMain::threadGuiEvent);
 		assert(bOK); // something has gone wrong with the gui
 		
 		// select the fixing item 
diff --git a/QtFixer/VbrfixMain.h b/QtFixer/VbrfixMain.h
index 4abe266..eaf20cc 100644
--- a/QtFixer/VbrfixMain.h
+++ b/QtFixer/VbrfixMain.h
@@ -23,7 +23,7 @@
 #define __VBRFIXMAIN_H
 
 #include "ui_vbrfixui.h"
-#include <QtGui>
+#include <QtWidgets>
 
 #include "VbrfixThread.h"
 #include "Options.h"
diff --git a/QtFixer/VbrfixSettings.cpp b/QtFixer/VbrfixSettings.cpp
index 962160d..f599071 100644
--- a/QtFixer/VbrfixSettings.cpp
+++ b/QtFixer/VbrfixSettings.cpp
@@ -23,7 +23,7 @@
 #include "VbrfixSettings.h"
 #include "ComboManager.h"
 #include "Options.h"
-#include <QtGui>
+#include <QtWidgets>
 
 VbrfixSettings::VbrfixSettings(QWidget *parent, Options &options)
 	: QDialog(parent)
diff --git a/QtFixer/VbrfixThread.h b/QtFixer/VbrfixThread.h
index 9e2425e..b03eec2 100644
--- a/QtFixer/VbrfixThread.h
+++ b/QtFixer/VbrfixThread.h
@@ -22,7 +22,7 @@
 #ifndef VBRFIXTHREAD_H
 #define VBRFIXTHREAD_H
 
-#include <QtGui>
+#include <QtWidgets>
 #include "FeedBackInterface.h"
 #include "FixerSettings.h"
 #include "VbrFixer.h"