diff --git a/man/feh.pre b/man/feh.pre
index e3609a07c6a4a9e23d1076d644bc719f22e1b25e..9b0d3d822328cdf54906c2741e712db1728bc135 100644
--- a/man/feh.pre
+++ b/man/feh.pre
@@ -187,6 +187,9 @@ Specify
 as extra directory in which to search for fonts; can be used multiple times to
 add multiple paths.
 .
+.It Cm --force-aliasing
+Disable antialiasing for zooming, background setting etc.
+.
 .It Cm -I , --fullindex
 Same as Index mode, but you also get image size and dimensions printed
 below each thumbnail.