diff --git a/src/sdlan_network.erl b/src/sdlan_network.erl
index 4333543..7f2c794 100644
--- a/src/sdlan_network.erl
+++ b/src/sdlan_network.erl
@@ -156,7 +156,7 @@ disable_client(Pid, ClientId) when is_pid(Pid), is_binary(ClientId) ->
     gen_server:call(Pid, {disable_client, ClientId}).
 
 -spec exposed_service_changed(Pid :: pid(), ClientIds :: [binary()]) -> ok.
-exposed_service_changed(Pid, ClientIds) when is_pid(Pid), is_binary(ClientIds) ->
+exposed_service_changed(Pid, ClientIds) when is_pid(Pid), is_list(ClientIds) ->
     gen_server:call(Pid, {exposed_service_changed, ClientIds}).
 
 -spec get_channel(Pid :: pid(), ClientId :: binary()) -> error | {ok, ChannelPid :: pid()}.