diff --git a/oml/ui.py b/oml/ui.py
index e7982e9..5c516c5 100644
--- a/oml/ui.py
+++ b/oml/ui.py
@@ -1,6 +1,6 @@
 # encoding: utf-8
 # vi:si:et:sw=4:sts=4:ts=4
-DEBUG = False
+import sys
 try:
     from gi.repository import Gtk, GObject
     GObject.threads_init()
@@ -10,6 +10,8 @@ except:
     import tkinter.filedialog
     use_Gtk = False
 
+DEBUG = False
+
 class GtkUI:
     def selectFolder(self, data):
         dialog = Gtk.FileChooserDialog(data.get("title", "Select Folder"),
@@ -62,6 +64,11 @@ class GtkUI:
 class TkUI:
     def __init__(self):
         self.root = Tk()
+        if sys.platform == 'darwin':
+            self.root.lift()
+            self.root.call('wm', 'attributes', '.', '-topmost', True)
+            self.root.update()
+            self.root.after_idle(self.root.call, 'wm', 'attributes', '.', '-topmost', False)
         self.root.withdraw()  # hiding tkinter window
 
     def selectFolder(self, data):