diff --git a/Doc/library/stdtypes.rst b/Doc/library/stdtypes.rst
index 2bbc02042fa..925ea541b45 100644
--- a/Doc/library/stdtypes.rst
+++ b/Doc/library/stdtypes.rst
@@ -800,7 +800,8 @@ functions based on regular expressions.
 
 .. method:: str.capitalize()
 
-   Return a copy of the string with only its first character capitalized.
+   Return a copy of the string with its first character capitalized and the
+   rest lowered.
 
 
 .. method:: str.center(width[, fillchar])