diff --git a/flake.nix b/flake.nix
index e8abed6220379b94b6c70c8153f56d12ad3baaeb..8943f3c1556afb4c39ab388d0c9547b319126954 100644
--- a/flake.nix
+++ b/flake.nix
@@ -54,7 +54,7 @@
             text = ''
               cabal update hackage.haskell.org
               cabal build --enable-tests
-              eval "$(cabal list-bin gbs-downloader-tests)"
+              cabal run gbs-downloader-test
             '';
           }
         }/bin/cabal-build-and-test";