diff --git a/Exscript/emulators/command.py b/Exscript/emulators/command.py
index c4543983..7cdd8d2d 100644
--- a/Exscript/emulators/command.py
+++ b/Exscript/emulators/command.py
@@ -23,7 +23,6 @@
 """
 Defines the behavior of commands by mapping commands to functions.
 """
-from past.builtins import execfile
 from builtins import str
 from builtins import object
 import re
@@ -84,7 +83,7 @@ def add_from_file(self, filename, handler_decorator=None):
                each of the handlers in the file.
         """
         args = {}
-        execfile(filename, args)
+        exec(filename, args)
         commands = args.get('commands')
         if commands is None:
             raise Exception(filename + ' has no variable named "commands"')