diff --git a/nixos/modules/services/display-managers/greetd.nix b/nixos/modules/services/display-managers/greetd.nix
index ece50eda7927..2d77daacf51d 100644
--- a/nixos/modules/services/display-managers/greetd.nix
+++ b/nixos/modules/services/display-managers/greetd.nix
@@ -98,7 +98,7 @@ in
       };
 
       serviceConfig = {
-        ExecStart = "${pkgs.greetd.greetd}/bin/greetd --config ${settingsFormat.generate "greetd.toml" cfg.settings}";
+        ExecStart = "${lib.getExe cfg.package} --config ${settingsFormat.generate "greetd.toml" cfg.settings}";
 
         Restart = lib.mkIf cfg.restart "on-success";
 
diff --git a/pkgs/applications/display-managers/greetd/default.nix b/pkgs/applications/display-managers/greetd/default.nix
index 8ef7bd41bbbf..0d1fbeedee25 100644
--- a/pkgs/applications/display-managers/greetd/default.nix
+++ b/pkgs/applications/display-managers/greetd/default.nix
@@ -46,6 +46,7 @@ rustPlatform.buildRustPackage rec {
       Comes with agreety, a simple, text-based greeter.
     '';
     homepage = "https://sr.ht/~kennylevinsen/greetd/";
+    mainProgram = "greetd";
     license = licenses.gpl3Plus;
     maintainers = with maintainers; [ ];
     platforms = platforms.linux;