diff --git a/tmux.nix b/tmux.nix
index dd4bcc9..2ebd278 100644
--- a/tmux.nix
+++ b/tmux.nix
@@ -5,5 +5,11 @@
     keyMode = "vi";
     prefix = "C-s";
     baseIndex = 1;
+    extraConfig = ''
+      unbind '"'
+      unbind %
+      bind h split-window -h
+      bind v split-window -v
+    '';
   };
 }