diff --git a/tmux.conf b/tmux.conf.2018
similarity index 100%
rename from tmux.conf
rename to tmux.conf.2018
diff --git a/xterm_colour_chart.py b/xterm_colour_chart.py
index 6292f43..b60a950 100755
--- a/xterm_colour_chart.py
+++ b/xterm_colour_chart.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python2
 
 """
 XTerm Colour Chart