Mention explicitly the False is considered false.
diff --git a/Doc/ref/ref5.tex b/Doc/ref/ref5.tex
index 24ed4ac..458ff0f 100644
--- a/Doc/ref/ref5.tex
+++ b/Doc/ref/ref5.tex
@@ -1021,9 +1021,9 @@
In the context of Boolean operations, and also when expressions are
used by control flow statements, the following values are interpreted
-as false: \code{None}, numeric zero of all types, empty sequences
-(strings, tuples and lists), and empty mappings (dictionaries). All
-other values are interpreted as true.
+as false: \code{False}, \code{None}, numeric zero of all types, empty
+sequences (strings, tuples and lists), and empty mappings (dictionaries).
+All other values are interpreted as true.
The operator \keyword{not} yields \code{True} if its argument is false,
\code{False} otherwise.