diff --git a/man/git-delete-branch.md b/man/git-delete-branch.md
index 7cb0d24..cf779c0 100644
--- a/man/git-delete-branch.md
+++ b/man/git-delete-branch.md
@@ -8,6 +8,7 @@ git-delete-branch(1) -- Delete branches
 ## DESCRIPTION
 
   Deletes local and remote branch named <branchname>.
+  Note that local deletion fails if the branch is checked out.
 
 ## OPTIONS