diff --git a/lib/encode.ex b/lib/encode.ex
index 3d4897e..d21b1db 100644
--- a/lib/encode.ex
+++ b/lib/encode.ex
@@ -20,7 +20,7 @@ defmodule Jason.Encode do
 
   alias Jason.{Codegen, EncodeError, Encoder, Fragment}
 
-  @typep escape :: (String.t, String.t, integer, iodata -> iodata)
+  @typep escape :: (String.t, String.t, integer -> iodata)
   @typep encode_map :: (map, escape, encode_map -> iodata)
   @opaque opts :: {escape, encode_map}