diff --git a/README.md b/README.md
index 4b739b8..a061b3e 100644
--- a/README.md
+++ b/README.md
@@ -245,7 +245,7 @@ String
 ```python
 <list> = <str>.split()                       # Splits on any whitespace character.
 <list> = <str>.split(sep=None, maxsplit=-1)  # Splits on 'sep' str at most 'maxsplit' times.
-<str>  = <str>.join(<list>)                  # Joins elements using string as separator.
+<str>  = <str>.join(<collection>)            # Joins elements using string as separator.
 ```
 
 ```python