diff --git a/Doc/library/csv.rst b/Doc/library/csv.rst
index 81949261c563d0..1fb71b82743a37 100644
--- a/Doc/library/csv.rst
+++ b/Doc/library/csv.rst
@@ -377,6 +377,8 @@ The :mod:`!csv` module defines the following constants:
    Instructs :class:`writer` objects to only quote those fields which contain
    special characters such as *delimiter*, *quotechar*, ``'\r'``, ``'\n'``
    or any of the characters in *lineterminator*.
+   If *doublequote* is :const:`False` and *escapechar* is set,
+   the *quotechar* is escaped instead of causing the field to be quoted.
 
 
 .. data:: QUOTE_NONNUMERIC