diff --git a/system/alt.nix b/system/alt.nix
index ede4c84..472cd0e 100644
--- a/system/alt.nix
+++ b/system/alt.nix
@@ -11,4 +11,7 @@
     ];
     shell = pkgs.fish;
   };
+  services.xserver.displayManager.gdm.settings = {
+    greeter.Exclude = "bin,root,daemon,adm,lp,sync,shutdown,halt,mail,news,uucp,operator,nobody,nobody4,noaccess,postgres,pvm,rpm,nfsnobody,pcap,alt";
+  };
 }