diff --git a/Doc/library/string.rst b/Doc/library/string.rst
index 56a2a3401ba..1f8e2304f01 100644
--- a/Doc/library/string.rst
+++ b/Doc/library/string.rst
@@ -583,7 +583,7 @@ Expressing a percentage::
 
    >>> points = 19
    >>> total = 22
-   >>> 'Correct answers: {:.2%}.'.format(points/total)
+   >>> 'Correct answers: {:.2%}'.format(points/total)
    'Correct answers: 86.36%'
 
 Using type-specific formatting::