diff --git a/man/feh.pre b/man/feh.pre
index 7b1e791b82d9b708b9f1007417240445fa60c8ae..eb31f37f42756904955e8c43c22235eb8a55e943 100644
--- a/man/feh.pre
+++ b/man/feh.pre
@@ -360,7 +360,7 @@ When combined with
 this option only affects images opened from the thumbnail overview. The
 thumbnail list itself will still be windowed.
 .
-.It Cm -g , --geometry Oo Ar width No x Ar height Oc Op + Ar x No + Ar y
+.It Cm -g , --geometry Ar width Cm x Ar height No | Cm + Ar x Cm + Ar y | Ar width Cm x Ar height Cm + Ar x Cm + Ar y
 .
 Limit (and don't change) the window size.  Takes an X-style geometry
 .Ar string