diff --git a/.tmux.conf b/.tmux.conf
index 3a66fe5..4c935f5 100644
--- a/.tmux.conf
+++ b/.tmux.conf
@@ -1,8 +1,12 @@
 # thanks to this awesome guide: https://thevaluable.dev/tmux-config-mouseless/ (visited 2023-02-04
 
-# make ctrl-space the prefix. Keep ctrl-b as an alternative.
-#unbind C-b
-set -g prefix2 C-Space
+# make ctrl-space the prefix. Unbind default ctrl-b
+set -g prefix C-Space
+set -g prefix C-Space
+unbind -T prefix C-b
+unbind -n C-b
+unbind C-b
+bind-key -n C-b send-keys C-b
 
 # enable using the mouse
 set -g mouse on
@@ -138,3 +142,4 @@ set-window-option -g clock-mode-colour green #green
 
 # bell
 set-window-option -g window-status-bell-style fg=black,bg=red #base02, red
+