diff --git a/Performance-Optimizations.md b/Performance-Optimizations.md
index 1918b7d..128b2f2 100644
--- a/Performance-Optimizations.md
+++ b/Performance-Optimizations.md
@@ -191,7 +191,7 @@ def grandchild():
 
 @run_async
 def child():
-  foo()
+  grandchild()
 
 @run_async
 def parent():