relax return type of recv
diff --git a/src/rexi_utils.erl b/src/rexi_utils.erl
index 3b6102d..abee74f 100644
--- a/src/rexi_utils.erl
+++ b/src/rexi_utils.erl
@@ -4,7 +4,7 @@
%% @doc set up the receive loop with an overall timeout
-spec recv([any()], integer(), function(), any(), timeout(), timeout()) ->
- {ok, any()} | timeout | {error, any()}.
+ {ok, any()} | timeout | {error, atom()} | {error, atom(), any()}.
recv(Refs, Keypos, Fun, Acc0, infinity, PerMsgTO) ->
process_mailbox(Refs, Keypos, Fun, Acc0, nil, PerMsgTO);
recv(Refs, Keypos, Fun, Acc0, GlobalTimeout, PerMsgTO) ->
