diff --git a/src/gui/formmain.cpp b/src/gui/formmain.cpp
index be145b499..00a432949 100755
--- a/src/gui/formmain.cpp
+++ b/src/gui/formmain.cpp
@@ -45,8 +45,8 @@
 
 FormMain *FormMain::s_instance;
 
-FormMain::FormMain(QWidget *parent)
-  : QMainWindow(parent), m_ui(new Ui::FormMain) {
+FormMain::FormMain(QWidget *parent, Qt::WindowFlags f)
+  : QMainWindow(parent, f), m_ui(new Ui::FormMain) {
   m_ui->setupUi(this);
 
   // Initialize singleton.
diff --git a/src/gui/formmain.h b/src/gui/formmain.h
index e87696ff9..f1bbe3731 100644
--- a/src/gui/formmain.h
+++ b/src/gui/formmain.h
@@ -36,7 +36,7 @@ class FormMain : public QMainWindow {
 
   public:
     // Constructors and destructors.
-    explicit FormMain(QWidget *parent = 0);
+    explicit FormMain(QWidget *parent = 0, Qt::WindowFlags f = 0);
     virtual ~FormMain();
 
     // Returns menu for the tray icon.