diff --git a/bin/cat/cat.1 b/bin/cat/cat.1
index 19309a413906..fb7187461636 100644
--- a/bin/cat/cat.1
+++ b/bin/cat/cat.1
@@ -93,9 +93,7 @@ Display non-printing characters (see the
 option), and display tab characters as
 .Ql ^I .
 .It Fl u
-The
-.Fl u
-option guarantees that the output is unbuffered.
+Disable output buffering.
 .It Fl v
 Display non-printing characters so they are visible.
 Control characters print as