diff --git a/modules/desktop/dm/default.nix b/modules/desktop/dm/default.nix
index b0fa0ab..1d5e047 100644
--- a/modules/desktop/dm/default.nix
+++ b/modules/desktop/dm/default.nix
@@ -32,6 +32,7 @@ in
     services.xserver = {
       layout = "de";
       xkbVariant = "";
+      xkbOptions = "caps:ctrl_modifier";
     };
     services.xserver.displayManager.autoLogin.enable = (cfg.autologin != null);
     services.xserver.displayManager.autoLogin.user = cfg.autologin;