diff --git a/pkgs/test/haskell/cabalSdist/local/generated.nix b/pkgs/test/haskell/cabalSdist/local/generated.nix
index f6463e762ddd..bfa299962bcb 100644
--- a/pkgs/test/haskell/cabalSdist/local/generated.nix
+++ b/pkgs/test/haskell/cabalSdist/local/generated.nix
@@ -3,14 +3,7 @@
 mkDerivation {
   pname = "local";
   version = "0.1.0.0";
-  src = lib.fileset.toSource {
-    root = ./.;
-    fileset = lib.fileset.unions [
-      ./app
-      ./CHANGELOG.md
-      ./local.cabal
-    ];
-  };
+  src = ./.;
   isLibrary = false;
   isExecutable = true;
   executableHaskellDepends = [ base ];