diff --git a/pkgs/lib/types.nix b/pkgs/lib/types.nix
index 6ddac61d91b..f268580d783 100644
--- a/pkgs/lib/types.nix
+++ b/pkgs/lib/types.nix
@@ -47,10 +47,6 @@ rec {
 
   types = rec {
 
-    inferred = mkOptionType {
-      name = "inferred type";
-    };
-
     bool = mkOptionType {
       name = "boolean";
       check = lib.traceValIfNot builtins.isBool;