diff --git a/pkgs/development/libraries/haskell/modular-arithmetic/default.nix b/pkgs/development/libraries/haskell/modular-arithmetic/default.nix
index 7d53d81f7bb..c4a77630e6a 100644
--- a/pkgs/development/libraries/haskell/modular-arithmetic/default.nix
+++ b/pkgs/development/libraries/haskell/modular-arithmetic/default.nix
@@ -4,7 +4,6 @@ cabal.mkDerivation (self: {
   pname = "modular-arithmetic";
   version = "1.0.1.1";
   sha256 = "14n83kjmz8mqjivjhwxk1zckms5z3gn77yq2hsw2yybzff2vkdkd";
-  noHaddock = true;
   meta = {
     description = "A type for integers modulo some constant";
     license = self.stdenv.lib.licenses.bsd3;