diff --git a/tm-bench/README.rst b/tm-bench/README.rst
index 24c4102f8..876e9f351 100644
--- a/tm-bench/README.rst
+++ b/tm-bench/README.rst
@@ -54,7 +54,7 @@ then run:
 ::
 
     tendermint init
-    tendermint node --app_proxy=dummy
+    tendermint node --proxy_app=dummy
 
     tm-bench localhost:46657