diff --git a/lib/types.nix b/lib/types.nix
index 5cd44b5e9..16ccb145e 100644
--- a/lib/types.nix
+++ b/lib/types.nix
@@ -7,7 +7,7 @@ let
     mkOptionType optional optionalAttrs optionals range splitString
     stringLength substring test testString typeOf;
   inherit (lib.types)
-    attrsOf bool either enum int listOf nullOr path str string submodule;
+    attrsOf bool either enum int listOf nullOr path str submodule;
 in
 
 rec {
@@ -182,7 +182,7 @@ rec {
             extraConfig = mkOption {
               description = "Extra Configuration to be appended to the hosts file";
               default = "";
-              type = string;
+              type = str;
             };
             port = mkOption {
               type = int;