diff --git a/src/jsx.erl b/src/jsx.erl
index 34f110e..6e9dd7b 100644
--- a/src/jsx.erl
+++ b/src/jsx.erl
@@ -67,8 +67,8 @@ parser(OptsList) ->
     end.
     
     
--spec term_to_json(JSON::json()) -> binary().
--spec term_to_json(JSON::json(), Opts::encoder_opts()) -> binary().
+-spec term_to_json(JSON::eep0018()) -> binary().
+-spec term_to_json(JSON::eep0018(), Opts::encoder_opts()) -> binary().
 
 term_to_json(JSON) ->
     term_to_json(JSON, []).
diff --git a/src/jsx_eep0018.erl b/src/jsx_eep0018.erl
index cd9c280..b2f817c 100644
--- a/src/jsx_eep0018.erl
+++ b/src/jsx_eep0018.erl
@@ -34,7 +34,7 @@
 
 
 
--spec json_to_term(JSON::binary(), Opts::decoder_opts()) -> json().
+-spec json_to_term(JSON::binary(), Opts::decoder_opts()) -> eep0018().
 
 json_to_term(JSON, Opts) ->
     P = jsx:parser(opts_to_jsx_opts(Opts)),
@@ -49,7 +49,7 @@ json_to_term(JSON, Opts) ->
 %%  erlang terms to jsx events is straightforward and the iterator can be faked with an
 %%  anonymous function
 
--spec term_to_json(JSON::json(), Opts::encoder_opts()) -> binary().
+-spec term_to_json(JSON::eep0018(), Opts::encoder_opts()) -> binary().
 
 term_to_json(List, Opts) ->
     case proplists:get_value(strict, Opts, true) of