diff --git a/cmsmap.py b/cmsmap.py
index 7352fb6..e312c31 100755
--- a/cmsmap.py
+++ b/cmsmap.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python3
+#!/usr/bin/env python3
 import signal, sys
 
 from cmsmap.main import main