diff --git a/README.md b/README.md
index b433f80..3146c2a 100644
--- a/README.md
+++ b/README.md
@@ -170,7 +170,7 @@ Iterator
 
 #### Skips first element:
 ```python
-next(<iter>)
+next(<iter>, None)  # default of `None` avoids exception for empty <iter>
 for element in <iter>:
     ...
 ```