diff --git a/flake.nix b/flake.nix
index 7e2c6b4..6b5afbc 100644
--- a/flake.nix
+++ b/flake.nix
@@ -37,6 +37,7 @@ rec {
             inherit description;
             homepage = "https://github.com/oxalica/nil";
             license = with lib.licenses; [ mit asl20 ];
+            mainProgram = "nil";
           };
         };