diff -ur cuneiform-qt-0.1.2.orig/cuneiform-qt/cuneiform-qt.pro cuneiform-qt-0.1.2/cuneiform-qt/cuneiform-qt.pro
--- cuneiform-qt-0.1.2.orig/cuneiform-qt/cuneiform-qt.pro	2015-02-03 16:28:00.000000000 +0300
+++ cuneiform-qt-0.1.2/cuneiform-qt/cuneiform-qt.pro	2015-02-03 16:30:14.000000000 +0300
@@ -5,6 +5,10 @@
 TARGET = cuneiform-qt
 VERSION = 0.1.2
 
+greaterThan(QT_MAJOR_VERSION, 4) {
+    QT += widgets
+}
+
 SOURCES += backend.cpp \
 		   main.cpp \
            mainWindow.cpp \
diff -ur cuneiform-qt-0.1.2.orig/cuneiform-qt/main.cpp cuneiform-qt-0.1.2/cuneiform-qt/main.cpp
--- cuneiform-qt-0.1.2.orig/cuneiform-qt/main.cpp	2012-06-17 12:40:42.000000000 +0400
+++ cuneiform-qt-0.1.2/cuneiform-qt/main.cpp	2015-02-06 10:49:19.000000000 +0300
@@ -20,6 +20,7 @@
 #include <QtGui>
 #include <iostream>
 #include "mainWindow.h"
+#include <QMessageBox>
 
 int main( int argc, char *argv[] ) {
 
diff -ur cuneiform-qt-0.1.2.orig/cuneiform-qt/mainWindow.cpp cuneiform-qt-0.1.2/cuneiform-qt/mainWindow.cpp
--- cuneiform-qt-0.1.2.orig/cuneiform-qt/mainWindow.cpp	2015-02-03 16:28:00.000000000 +0300
+++ cuneiform-qt-0.1.2/cuneiform-qt/mainWindow.cpp	2015-02-04 19:02:52.000000000 +0300
@@ -18,6 +18,8 @@
  ***************************************************************************/
 
 #include "mainWindow.h"
+#include <QFileDialog>
+#include <QGraphicsPixmapItem>
 
 MainWindow::MainWindow( QStringList *names )
 	: QMainWindow( 0, 0 )
@@ -59,21 +61,21 @@
 	// TODO Disable action if image is not loaded
 	
 	// Open image
-	connect( form->actionOpen, SIGNAL(activated(int)), this, SLOT(OpenImage()) ); 
+	connect( form->actionOpen, SIGNAL(triggered()), this, SLOT(OpenImage()) );
 	// Recognize text
-	connect( form->actionRecognizeText, SIGNAL(activated(int)), this, SLOT(RecognizeText()) ); 
+	connect( form->actionRecognizeText, SIGNAL(triggered()), this, SLOT(RecognizeText()) );
 	// Save result text
-	connect( form->actionSave, SIGNAL(activated(int)), this, SLOT(SaveText()) ); 
+	connect( form->actionSave, SIGNAL(triggered()), this, SLOT(SaveText()) );
 	// Exit. TODO confirm exit without saving recognized text
-	connect( form->actionExit, SIGNAL(activated(int)), this, SLOT(onWindowClose()) ); 
+	connect( form->actionExit, SIGNAL(triggered()), this, SLOT(onWindowClose()) );
 
 	// Open configuration dialog
-	connect( form->actionConfigure, SIGNAL(activated(int)), config, SLOT(exec()) ); 
+	connect( form->actionConfigure, SIGNAL(triggered()), config, SLOT(exec()) ); 
     connect( config, SIGNAL(accepted()), this, SLOT(onSettingsSave()) );
     connect( config, SIGNAL(rejected()), this, SLOT(onSettingsCancel()) );
 
 	// About dialog
-	connect( form->actionAbout, SIGNAL(activated(int)), this, SLOT(About()) );
+	connect( form->actionAbout, SIGNAL(triggered()), this, SLOT(About()) );
 	
 	// On window close
 	connect( this, SIGNAL(destroyed()), this, SLOT(onWindowClose()) );
diff -ur cuneiform-qt-0.1.2.orig/cuneiform-qt/mainWindow.h cuneiform-qt-0.1.2/cuneiform-qt/mainWindow.h
--- cuneiform-qt-0.1.2.orig/cuneiform-qt/mainWindow.h	2012-06-17 12:40:42.000000000 +0400
+++ cuneiform-qt-0.1.2/cuneiform-qt/mainWindow.h	2015-02-03 16:31:32.000000000 +0300
@@ -23,6 +23,7 @@
 #include "ui_mainWindow.h"
 #include "settings.h"
 #include "backend.h"
+#include <QMessageBox>
 
 class MainWindow : public QMainWindow
 {