diff --git a/src/sockjs_http.erl b/src/sockjs_http.erl
index d9c06a2..ad7a3f0 100644
--- a/src/sockjs_http.erl
+++ b/src/sockjs_http.erl
@@ -16,13 +16,21 @@ path({cowboy, Req})       -> {Path, Req1} = cowboy_req:path(Req),
 method({cowboy, Req})       -> {Method, Req1} = cowboy_req:method(Req),
                                {method_atom(Method), {cowboy, Req1}}.
 
--spec method_atom(binary()) -> atom().
+-spec method_atom(binary() | atom()) -> atom().
 method_atom(<<"GET">>) -> 'GET';
 method_atom(<<"PUT">>) -> 'PUT';
 method_atom(<<"POST">>) -> 'POST';
 method_atom(<<"DELETE">>) -> 'DELETE';
 method_atom(<<"OPTIONS">>) -> 'OPTIONS';
-method_atom(<<"PATCH">>) -> 'PATCH'.
+method_atom(<<"PATCH">>) -> 'PATCH';
+method_atom(<<"HEAD">>) -> 'HEAD';
+method_atom('GET') -> 'GET';
+method_atom('PUT') -> 'PUT';
+method_atom('POST') -> 'POST';
+method_atom('DELETE') -> 'DELETE';
+method_atom('OPTIONS') -> 'OPTIONS';
+method_atom('PATCH') -> 'PATCH';
+method_atom('HEAD') -> 'HEAD'.
 
 -spec body(req()) -> {binary(), req()}.
 body({cowboy, Req})       -> {ok, Body, Req1} = cowboy_req:body(Req),