diff --git a/gsm_call_fsm.py b/gsm_call_fsm.py
index 167a805..c62df0c 100644
--- a/gsm_call_fsm.py
+++ b/gsm_call_fsm.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python2
 
 # Python implementation of GSM 04.08 call state machine for use with
 # OsmoNITB MNCC interface
diff --git a/mncc_sock.py b/mncc_sock.py
index 3cc1ba1..22fe034 100644
--- a/mncc_sock.py
+++ b/mncc_sock.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python2
 
 # Python interface to OsmoNITB MNCC (Mobile Network Call Control)
 # interface
diff --git a/mncc_test.py b/mncc_test.py
index f9d102b..de35fe6 100755
--- a/mncc_test.py
+++ b/mncc_test.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python2
 
 # Python testing tool for establishing calls via the OsmoNITB MNCC
 # interface.
diff --git a/smpp_test.py b/smpp_test.py
index e2c2ee0..181f60d 100755
--- a/smpp_test.py
+++ b/smpp_test.py
@@ -1,4 +1,5 @@
-#!/usr/bin/python
+#!/usr/bin/env python2
+
 import logging
 import sys