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-rw-r--r--src/cowboy_http_req.erl2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/cowboy_http_req.erl b/src/cowboy_http_req.erl
index 6c4aade..3a3dd2f 100644
--- a/src/cowboy_http_req.erl
+++ b/src/cowboy_http_req.erl
@@ -383,7 +383,7 @@ chunked_reply(Status, Headers, Req=#http_req{socket=Socket, transport=Transport,
%% @doc Send a chunk of data.
%%
%% A chunked reply must have been initiated before calling this function.
--spec chunk(iodata(), #http_req{}) -> ok.
+-spec chunk(iodata(), #http_req{}) -> ok | {error, atom()}.
chunk(_Data, #http_req{socket=_Socket, transport=_Transport, method='HEAD'}) ->
ok;
chunk(Data, #http_req{socket=Socket, transport=Transport, resp_state=chunks}) ->