diff --git a/samples/websocket_server.cr b/samples/websocket_server.cr
index ef926ff..61a0802 100644
--- a/samples/websocket_server.cr
+++ b/samples/websocket_server.cr
@@ -7,3 +7,5 @@ ws "/" do |socket|
     socket.send "Echo back from server #{message}"
   end
 end
+
+Kemal.run