diff --git a/nixos/common/modules/yubikey-auth.nix b/nixos/common/modules/yubikey-auth.nix
index fbdd638b..ebef07e1 100644
--- a/nixos/common/modules/yubikey-auth.nix
+++ b/nixos/common/modules/yubikey-auth.nix
@@ -2,7 +2,7 @@
   security.pam.yubico = {
     enable = true;
     debug = true;
-    # control = "required";
+    control = "required";
     mode = "challenge-response";
     id = [ "18550256" ];
   };