diff --git a/nixos/modules/services/misc/gitit.nix b/nixos/modules/services/misc/gitit.nix
index ab4d385ba16..befd8c628f1 100644
--- a/nixos/modules/services/misc/gitit.nix
+++ b/nixos/modules/services/misc/gitit.nix
@@ -35,7 +35,6 @@ let
       };
 
       haskellPackages = mkOption {
-        type = types.attrsOf types.package;
         default = pkgs.haskellPackages;
         defaultText = "pkgs.haskellPackages";
         example = literalExample "pkgs.haskell.packages.ghc784";