diff --git a/README.md b/README.md
index c2e3664..983e2ea 100644
--- a/README.md
+++ b/README.md
@@ -121,7 +121,7 @@ The name of the namespace which will be created to handle the administrative tas
 
 ```js
 instrument(io, {
-  namespaceName: "custom"
+  namespaceName: "/custom"
 });
 ```