diff --git a/EMSL_api.py b/EMSL_api.py
index 9d80bf0..9bedffb 100755
--- a/EMSL_api.py
+++ b/EMSL_api.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python2
 # -*- coding: utf-8 -*-
 
 """EMSL Api.