diff --git a/pkgs/tools/networking/wireguard-tools/default.nix b/pkgs/tools/networking/wireguard-tools/default.nix
index 08ef1fdae27..58f63b7a74b 100644
--- a/pkgs/tools/networking/wireguard-tools/default.nix
+++ b/pkgs/tools/networking/wireguard-tools/default.nix
@@ -66,6 +66,7 @@ stdenv.mkDerivation rec {
     homepage = "https://www.wireguard.com/";
     license = licenses.gpl2;
     maintainers = with maintainers; [ ericsagnes zx2c4 globin ma27 d-xo ];
+    mainProgram = "wg";
     platforms = platforms.unix;
   };
 }