diff --git a/pkgs/applications/misc/diebahn/default.nix b/pkgs/applications/misc/diebahn/default.nix
index c8ca56fb9f63..d8ac3cac8b5b 100644
--- a/pkgs/applications/misc/diebahn/default.nix
+++ b/pkgs/applications/misc/diebahn/default.nix
@@ -73,6 +73,7 @@ stdenv.mkDerivation rec {
     description = "Travel with all your train information in one place";
     homepage = "https://gitlab.com/schmiddi-on-mobile/diebahn";
     license = lib.licenses.gpl3Plus;
+    mainProgram = "diebahn";
     maintainers = with lib.maintainers; [ dotlambda ];
   };
 }