diff --git a/lib/websocket/driver/hybi.rb b/lib/websocket/driver/hybi.rb
index 01d952a..3bc0b97 100644
--- a/lib/websocket/driver/hybi.rb
+++ b/lib/websocket/driver/hybi.rb
@@ -103,7 +103,7 @@ module WebSocket
       end
 
       def frame(data, type = nil, code = nil)
-        return queue([data, type, code]) if @ready_state == 0
+        return queue([data, type, code]) if @ready_state <= 0
         return false unless @ready_state == 1
 
         data = data.to_s unless Array === data