diff --git a/run b/run
index 0c51da39..1145a24f 100755
--- a/run
+++ b/run
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python2
 
 import os
 import sys
diff --git a/setup.py b/setup.py
index fc2a74d6..5130635b 100644
--- a/setup.py
+++ b/setup.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python2
 # coding=utf-8
 
 from setuptools import setup, find_packages
diff --git a/src/octoprint/__init__.py b/src/octoprint/__init__.py
index 67baa4f7..883acc5d 100644
--- a/src/octoprint/__init__.py
+++ b/src/octoprint/__init__.py
@@ -1,4 +1,5 @@
-#!/usr/bin/env python
+#!/usr/bin/env python2
+
 import sys
 from octoprint.daemon import Daemon
 from octoprint.server import Server