diff --git a/tmux.nix b/tmux.nix
index a05550a..dd4bcc9 100644
--- a/tmux.nix
+++ b/tmux.nix
@@ -3,7 +3,7 @@
   programs.tmux = {
     enable = true;
     keyMode = "vi";
-    prefix = "C-a";
+    prefix = "C-s";
     baseIndex = 1;
   };
 }