diff --git a/pkgs/servers/http/dufs/default.nix b/pkgs/servers/http/dufs/default.nix
index af02b7199610..e7229a3d3a67 100644
--- a/pkgs/servers/http/dufs/default.nix
+++ b/pkgs/servers/http/dufs/default.nix
@@ -23,6 +23,9 @@ rustPlatform.buildRustPackage rec {
     Security
   ];
 
+  # FIXME: checkPhase on darwin will leave some zombie spawn processes
+  # see https://github.com/NixOS/nixpkgs/issues/205620
+  doCheck = !stdenv.isDarwin;
   checkFlags = [
     # tests depend on network interface, may fail with virtual IPs.
     "--skip=validate_printed_urls"