diff --git a/src/tsung/ts_server_websocket.erl b/src/tsung/ts_server_websocket.erl
index b8ece3169..ff2b2c7c9 100644
--- a/src/tsung/ts_server_websocket.erl
+++ b/src/tsung/ts_server_websocket.erl
@@ -163,6 +163,7 @@ send(Socket, Data, _Opts)  ->
             {error, timeout}
     end.
 
+close(none)   -> ok;
 close(Socket) ->
     Socket ! close.
 
diff --git a/src/tsung/ts_server_websocket_ssl.erl b/src/tsung/ts_server_websocket_ssl.erl
index 01fbe14cc..cc48ac7f5 100644
--- a/src/tsung/ts_server_websocket_ssl.erl
+++ b/src/tsung/ts_server_websocket_ssl.erl
@@ -164,6 +164,7 @@ send(Socket, Data, _Opts)  ->
             {error, timeout}
     end.
 
+close(none)   -> ok;
 close(Socket) ->
     Socket ! close.