diff --git a/man/mu-extract.1 b/man/mu-extract.1
index b9162275..c2c26d5a 100644
--- a/man/mu-extract.1
+++ b/man/mu-extract.1
@@ -7,6 +7,7 @@ mu extract\- display and save message parts (attachments)
 .SH SYNOPSIS
 
 .B mu extract [options] <file> [<parts-to-save>]
+.B mu extract [options] <file> <filename>
 
 .SH DESCRIPTION
 
@@ -18,6 +19,9 @@ For attachments, the file name used for saving is the name of the attachment
 in the message. If there is no such name, or when saving other mime-parts, a
 name derived from the message-id of the message.
 
+If you specify a filename as the second argument, an attempt will be made to
+find a extract the particular (first) MIME-part with that filename.
+
 Without any options, \fBmu extract\fR simply outputs the list of MIME-parts in
 the message.