diff --git a/modules/programs/tmux.nix b/modules/programs/tmux.nix
index 85052c9fd..ff3a3322f 100644
--- a/modules/programs/tmux.nix
+++ b/modules/programs/tmux.nix
@@ -284,7 +284,7 @@ in {
 
       shell = mkOption {
         default = defaultShell;
-        example = "\${pkgs.zsh}/bin/zsh";
+        example = literalExpression "${pkgs.zsh}/bin/zsh";
         type = with types; nullOr str;
         description = "Set the default-shell tmux variable.";
       };