diff --git a/toonz/sources/toonz/mainwindow.cpp b/toonz/sources/toonz/mainwindow.cpp
index 4b36902..0a368f9 100644
--- a/toonz/sources/toonz/mainwindow.cpp
+++ b/toonz/sources/toonz/mainwindow.cpp
@@ -202,7 +202,7 @@ void makePrivate(Room *room)
 			if (TFileStatus(templateFullMBPath).doesExist())
 				TSystem::copyFile(myMBPath, templateFullMBPath);
 			else
-				DVGui::MsgBox(WARNING, QObject::tr("Cannot open menubar settings template file. Re-installing Toonz will solve this problem."));
+				DVGui::warning(QObject::tr("Cannot open menubar settings template file. Re-installing Toonz will solve this problem."));
 		}
 	}
 }
diff --git a/toonz/sources/toonz/menubar.cpp b/toonz/sources/toonz/menubar.cpp
index 866880f..02de277 100644
--- a/toonz/sources/toonz/menubar.cpp
+++ b/toonz/sources/toonz/menubar.cpp
@@ -1449,13 +1449,13 @@ void StackedMenuBar::doCustomizeMenuBar(int index)
 		TFilePath mbPath = ToonzFolder::getMyModuleDir() + mbFileName;
 		if (!TFileStatus(mbPath).isReadable())
 		{
-			DVGui::MsgBox(WARNING, tr("Cannot open menubar settings file %1").arg(QString::fromStdString(mbFileName)));
+			DVGui::warning(tr("Cannot open menubar settings file %1").arg(QString::fromStdString(mbFileName)));
 			return;
 		}
 		QMenuBar* newMenu = loadMenuBar(mbPath); 
 		if (!newMenu)
 		{
-			DVGui::MsgBox(WARNING, tr("Failed to create menubar"));
+			DVGui::warning(tr("Failed to create menubar"));
 			return;
 		}
 		
diff --git a/toonz/sources/toonz/menubarpopup.h b/toonz/sources/toonz/menubarpopup.h
index 2670331..1b5af84 100644
--- a/toonz/sources/toonz/menubarpopup.h
+++ b/toonz/sources/toonz/menubarpopup.h
@@ -57,7 +57,7 @@ protected:
 // MenuBarPopup
 //-----------------------------------------------------------------------------
 
-class MenuBarPopup : public Dialog
+class MenuBarPopup : public DVGui::Dialog
 {
 	Q_OBJECT
 	CommandListTree*	m_commandListTree;