diff --git a/pkgs/applications/misc/moonlight-qt/default.nix b/pkgs/applications/misc/moonlight-qt/default.nix
index 1a764dfaef30..c29813517496 100644
--- a/pkgs/applications/misc/moonlight-qt/default.nix
+++ b/pkgs/applications/misc/moonlight-qt/default.nix
@@ -57,5 +57,6 @@ stdenv.mkDerivation rec {
     license = licenses.gpl3Plus;
     maintainers = with maintainers; [ luc65r ];
     platforms = platforms.all;
+    mainProgram = "moonlight";
   };
 }