diff --git a/src/gui/tabwidget.cpp b/src/gui/tabwidget.cpp
index 80552d6b6..bcca1237c 100644
--- a/src/gui/tabwidget.cpp
+++ b/src/gui/tabwidget.cpp
@@ -60,7 +60,7 @@ void TabWidget::setupMainMenuButton() {
   setCornerWidget(m_menuButton, Qt::TopLeftCorner);
 }
 
-bool TabWidget::openMainMenu() {
+void TabWidget::openMainMenu() {
   if (m_mainMenu == NULL) {
     m_mainMenu = new QMenu(tr("Main menu"), this);
     m_mainMenu->addMenu(FormMain::instance()->m_ui->m_menuFile);
diff --git a/src/gui/tabwidget.h b/src/gui/tabwidget.h
index f2f44bd09..fa16581a2 100644
--- a/src/gui/tabwidget.h
+++ b/src/gui/tabwidget.h
@@ -102,7 +102,7 @@ class TabWidget : public QTabWidget {
     bool closeTab(int index);
     bool closeCurrentTab();
 
-    bool openMainMenu();
+    void openMainMenu();
 
     // Closes all "closable" tabs except the active tab.
     void closeAllTabsExceptCurrent();