diff --git a/avrdude.1 b/avrdude.1
index 9c13e3ac..f0e80c93 100644
--- a/avrdude.1
+++ b/avrdude.1
@@ -40,6 +40,7 @@
 .Op Fl P Ar port
 .Op Fl q
 .Op Fl t
+.Op Fl u
 .Op Fl U Ar memtype:op:filename:filefmt
 .Op Fl v
 .Op Fl V
@@ -275,6 +276,10 @@ Tells
 .Nm
 to enter the interactive ``terminal'' mode instead of up- or downloading
 files.  See below for a detailed description of the terminal mode.
+.It Fl u
+Disable safemode and allow the fuse bits to be changed.  Safemode is
+enabled by default and is intended to prevent unintentionally changing
+the fuse bits.
 .It Xo Fl U Ar memtype Ns
 .Ar \&: Ns Ar op Ns
 .Ar \&: Ns Ar filename Ns