diff --git a/Documentation/git-branch.txt b/Documentation/git-branch.txt
index 903a690f10e3cdb7aea15a19332bf0e8bc87814e..d78f4c7398be1e7a403fcc34a9587dfee651b72d 100644
--- a/Documentation/git-branch.txt
+++ b/Documentation/git-branch.txt
@@ -72,6 +72,8 @@ OPTIONS
 	Create the branch's reflog.  This activates recording of
 	all changes made to the branch ref, enabling use of date
 	based sha1 expressions such as "<branchname>@\{yesterday}".
+	Note that in non-bare repositories, reflogs are usually
+	enabled by default by the `core.logallrefupdates` config option.
 
 -f::
 --force::