diff --git a/tmux/.tmux.conf b/tmux/.tmux.conf
index 9abbb50..63e2c46 100644
--- a/tmux/.tmux.conf
+++ b/tmux/.tmux.conf
@@ -1,6 +1,6 @@
 # More logical (to me) split keys.
-bind - split-window -p 38 -v
-bind | split-window -p 38 -h
+bind - split-window -v -l 38%
+bind | split-window -h -l 38%
 
 set -g @plugin 'tmux-plugins/tpm'
 set -g @plugin 'tmux-plugins/tmux-sensible'