diff --git a/invesalius/gui/frame.py b/invesalius/gui/frame.py
index 895beb0..b5e30c2 100644
--- a/invesalius/gui/frame.py
+++ b/invesalius/gui/frame.py
@@ -251,7 +251,8 @@ class Frame(wx.Frame):
         Exit InVesalius.
         """
         self.Destroy()
-        #sys.exit(0)
+        if hasattr(sys,"frozen") and sys.platform == 'darwin':
+            sys.exit(0)
 
     def _HideContentPanel(self, pubsub_evt):
         """
diff --git a/invesalius/invesalius.py b/invesalius/invesalius.py
index dec7def..b6d0faf 100755
--- a/invesalius/invesalius.py
+++ b/invesalius/invesalius.py
@@ -82,6 +82,9 @@ class InVesalius(wx.App):
     def Startup2(self):
         self.control = self.splash.control
         self.frame = self.splash.main
+        self.SetTopWindow(self.frame)
+        self.frame.Show()
+        self.frame.Raise()
 
 # ------------------------------------------------------------------
 
--
libgit2 0.21.2