diff --git a/README.md b/README.md
index b8997df..da95541 100644
--- a/README.md
+++ b/README.md
@@ -176,7 +176,7 @@ String
 ```python
 <str>  = <str>.replace(old_str, new_str)
 <list> = <str>.split(sep=None, maxsplit=-1)  # Splits on whitespaces.
-<str>  = <str>.strip([chars])
+<str>  = <str>.strip('<chars>')
 <str>  = <str>.join(<list>)
 <bool> = <str>.startswith(<str>)  # Pass tuple of strings for multiple options.
 <bool> = <str>.endswith(<str>)    # Pass tuple of strings for multiple options.