diff --git a/pkgs/games/legendary-gl/default.nix b/pkgs/games/legendary-gl/default.nix
index 355002d716f1..7d339681f333 100644
--- a/pkgs/games/legendary-gl/default.nix
+++ b/pkgs/games/legendary-gl/default.nix
@@ -35,6 +35,7 @@ buildPythonApplication rec {
     homepage = "https://github.com/derrod/legendary";
     license = licenses.gpl3;
     maintainers = with maintainers; [ equirosa ];
+    mainProgram = "legendary";
   };
 
   passthru.updateScript = gitUpdater { };