diff --git a/lib/rb/benchmark/server.rb b/lib/rb/benchmark/server.rb
index 400c90d..91d42fa 100644
--- a/lib/rb/benchmark/server.rb
+++ b/lib/rb/benchmark/server.rb
@@ -54,6 +54,6 @@
 
 Server.start_server(host, port.to_i, resolve_const(serverklass))
 
-Marshal.load(STDIN)
+Marshal.load(STDIN) # wait until we're instructed to shut down
 
 Server.shutdown