--- a/tmux.conf	Sat Dec 13 18:06:58 2014 +0100
+++ b/tmux.conf	Mon Dec 22 19:16:29 2014 +0100
@@ -28,6 +28,7 @@
 #act like GNU screen
 unbind C-b
 set -g prefix C-a
+bind-key C-a send-prefix
 
 bind Escape copy-mode
 # Setup 'v' to begin selection as in Vim
@@ -59,9 +60,6 @@
 # increase scrollback lines
 set -g history-limit 10000
 
-# switch to last pane
-bind-key C-a last-pane
-
 setw -g mode-mouse on
 
 # Map window numbers