diff --git a/doc/mn.txt b/doc/mn.txt
index 1c42c2a04..7623777fd 100644
--- a/doc/mn.txt
+++ b/doc/mn.txt
@@ -75,7 +75,7 @@ b         num     -         i    used to embolden italics
 .bi x y z mac     -         -    print x in emboldened font 2, y after,
                                  z before
 bm        num     1i,1i+1v  -    height of bottom margin
-.bt       mac     -         -    print pottom title
+.bt       mac     -         -    print bottom title
 bt        num     .5i+1v    -    bottom of footer to bottom of page
 .cf x y z mac     -         -    print contents of header line (double
                                  quotes around x, y before, z after)