diff --git a/pkgs/development/libraries/haskell/unlambda/default.nix b/pkgs/development/libraries/haskell/unlambda/default.nix
index 474bb1a8b092..a9e0def2bc70 100644
--- a/pkgs/development/libraries/haskell/unlambda/default.nix
+++ b/pkgs/development/libraries/haskell/unlambda/default.nix
@@ -7,6 +7,7 @@ cabal.mkDerivation (self: {
   isLibrary = true;
   isExecutable = true;
   buildDepends = [ mtl ];
+  hyperlinkSource = false;
   meta = {
     description = "Unlambda interpreter";
     license = "GPL";