1 files changed, 1 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/applications/display-managers/lightdm/gtk-greeter.nix b/nixpkgs/pkgs/applications/display-managers/lightdm/gtk-greeter.nix
index 4ceeeb9f6b5d..6d29d90d4b56 100644
--- a/nixpkgs/pkgs/applications/display-managers/lightdm/gtk-greeter.nix
+++ b/nixpkgs/pkgs/applications/display-managers/lightdm/gtk-greeter.nix
@@ -67,6 +67,7 @@ stdenv.mkDerivation rec {
   meta = with lib; {
     homepage = "https://github.com/Xubuntu/lightdm-gtk-greeter";
     description = "A GTK greeter for LightDM";
+    mainProgram = "lightdm-gtk-greeter";
     platforms = platforms.linux;
     license = licenses.gpl3Plus;
     maintainers = with maintainers; [ bobby285271 ];