diff --git a/src/etc/tidy.py b/src/etc/tidy.py
index 41908ac4051..057f5c2b27c 100644
--- a/src/etc/tidy.py
+++ b/src/etc/tidy.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python2.5
+#!/usr/bin/env python
 
 import sys, fileinput, subprocess
 
diff --git a/src/run.py b/src/run.py
index 6077166a856..47a46ce9d91 100755
--- a/src/run.py
+++ b/src/run.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 
 import os
 import sys