diff --git a/pkgs/tools/networking/wol/default.nix b/pkgs/tools/networking/wol/default.nix
index 114a8457d5b2..14cf48ae0dbd 100644
--- a/pkgs/tools/networking/wol/default.nix
+++ b/pkgs/tools/networking/wol/default.nix
@@ -19,6 +19,7 @@ stdenv.mkDerivation rec {
     homepage = "https://sourceforge.net/projects/wake-on-lan/";
     license = licenses.gpl2;
     maintainers = with maintainers; [ makefu ];
+    mainProgram = "wol";
     platforms = platforms.linux;
   };
 }