diff --git a/_tmux.conf b/_tmux.conf
index 8cd91e5..5e98a79 100644
--- a/_tmux.conf
+++ b/_tmux.conf
@@ -1,4 +1,7 @@
-set -g prefix C-a
+unbind C-b
+set -g prefix C-Space
+bind Space copy-mode
+bind C-Space copy-mode
 set -g default-terminal "screen-256color"
 
 # Bindings for vertical + horizontal splits