diff --git a/main.py b/main.py
index e19a0888..161d9da0 100644
--- a/main.py
+++ b/main.py
@@ -7,8 +7,13 @@
 #
 #-------------------------------------------------------------------------------
 from __future__ import division
-from Tkinter import *
-import tkMessageBox
+try:
+    import tkinter
+    import tkinter.messagebox
+except:
+    import Tkinter as tkinter
+    import tkMessageBox
+from tkinter import *
 from PIL import Image, ImageTk
 import os
 import glob
@@ -133,7 +138,7 @@ def loadDir(self, dbg = False):
         self.imageDir = os.path.join(r'./Images', '%03d' %(self.category))
         self.imageList = glob.glob(os.path.join(self.imageDir, '*.JPEG'))
         if len(self.imageList) == 0:
-            print 'No .JPEG images found in the specified dir!'
+            print ('No .JPEG images found in the specified dir!')
             return
 
         # default to the 1st image in the collection
@@ -164,7 +169,7 @@ def loadDir(self, dbg = False):
             self.egLabels[i].config(image = self.egList[-1], width = SIZE[0], height = SIZE[1])
 
         self.loadImage()
-        print '%d images loaded from %s' %(self.total, s)
+        print ('%d images loaded from %s' %(self.total, s))
 
     def loadImage(self):
         # load image
@@ -203,7 +208,7 @@ def saveImage(self):
             f.write('%d\n' %len(self.bboxList))
             for bbox in self.bboxList:
                 f.write(' '.join(map(str, bbox)) + '\n')
-        print 'Image No. %d saved' %(self.cur)
+        print ('Image No. %d saved' %(self.cur))
 
 
     def mouseClick(self, event):