diff --git a/OpenBoard.pro b/OpenBoard.pro
index 2336fe96..5f073bea 100644
--- a/OpenBoard.pro
+++ b/OpenBoard.pro
@@ -28,13 +28,15 @@ VERSION_RC = $$replace(VERSION_RC, "r", "240") # 0xF0
 QT += webkit
 QT += svg
 QT += network
-#QT += phonon
 QT += xml
 QT += script
 QT += xmlpatterns
 QT += uitools
 QT += multimedia
 QT += webkitwidgets
+QT += multimediawidgets
+QT += printsupport
+QT += core
 
 INCLUDEPATH += src
 
@@ -65,6 +67,7 @@ include($$THIRD_PARTY_PATH/quazip/quazip.pri)
 DEPENDPATH += $$THIRD_PARTY_PATH/qt/singleapplication
 INCLUDEPATH += $$THIRD_PARTY_PATH/qt/singleapplication
 include($$THIRD_PARTY_PATH/qt/singleapplication/qtsingleapplication.pri)
+include($$THIRD_PARTY_PATH/qt/lockedfile/qtlockedfile.pri)
 
 FORMS += resources/forms/mainWindow.ui \
    resources/forms/preferences.ui \
diff --git a/src/desktop/UBCustomCaptureWindow.cpp b/src/desktop/UBCustomCaptureWindow.cpp
index f625c56a..47eafdbe 100644
--- a/src/desktop/UBCustomCaptureWindow.cpp
+++ b/src/desktop/UBCustomCaptureWindow.cpp
@@ -26,6 +26,7 @@
 
 #include <QApplication>
 #include <QDesktopWidget>
+#include <QStyle>
 
 #include "UBCustomCaptureWindow.h"
 
diff --git a/src/gui/UBRubberBand.cpp b/src/gui/UBRubberBand.cpp
index b2d8f451..a6c36e98 100644
--- a/src/gui/UBRubberBand.cpp
+++ b/src/gui/UBRubberBand.cpp
@@ -29,6 +29,7 @@
 
 #include <QtGui>
 #include <QStyleFactory>
+#include <QStyle>
 
 #ifdef Q_OS_OSX
 #include <QtGui/QMacStyle>