diff --git a/chapters/More on Functions.md b/chapters/More on Functions.md
index a98b3cb..723bbab 100644
--- a/chapters/More on Functions.md	
+++ b/chapters/More on Functions.md	
@@ -128,8 +128,8 @@ function map<E, O>(arr: E[], func: (arg: E) => O): O[] {
   return arr.map(func);
 }
 
-// Parameter 'n' is of type 'number'
-// 'parsed' is of type 'string[]'
+// Parameter 'n' is of type 'string'
+// 'parsed' is of type 'number[]'
 const parsed = map(["1", "2", "3"], n => parseInt(n));
 ```