diff --git a/snippets/sum_by.md b/snippets/sum_by.md
index 90de69d0c..8456c414f 100644
--- a/snippets/sum_by.md
+++ b/snippets/sum_by.md
@@ -5,11 +5,11 @@ tags: math,list,function,beginner
 
 Returns the sum of a list, after mapping each element to a value using the provided function.
 
-Use `map()` with `fn` to map each element to a value using the provided function, convert to a `list` and use `sum()` to return the sum of the values.
+Use `map()` with `fn` to map each element to a value using the provided function, use `sum()` to return the sum of the values.
 
 ```py
 def sum_by(lst, fn):
-  return sum(list(map(fn,lst)))
+  return sum(map(fn,lst))
 ```
 
 ```py