diff --git a/SimplePanoramaViewer b/SimplePanoramaViewer
index 1df0628..1b4b61b 100755
--- a/SimplePanoramaViewer
+++ b/SimplePanoramaViewer
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import os
 import sys