diff --git a/doc/Guidebook.mn b/doc/Guidebook.mn
index 96de3d7e5..062dfe68b 100644
--- a/doc/Guidebook.mn
+++ b/doc/Guidebook.mn
@@ -1,4 +1,4 @@
-.\" $NHDT-Branch: NetHack-3.7 $:$NHDT-Revision: 1.355 $ $NHDT-Date: 1580346228 2020/01/30 01:03:48 $
+.\" $NHDT-Branch: NetHack-3.7 $:$NHDT-Revision: 1.359 $ $NHDT-Date: 1581296179 2020/02/10 00:56:19 $
 .\"
 .\" This is an excerpt from the 'roff' man page from the 'groff' package.
 .\" NetHack's Guidebook.mn currently does *not* adhere to these guidelines.
@@ -2755,7 +2755,7 @@ Defeated Medusa.
 .lp "Bell    "
 Acquired the Bell of Opening.
 .lp "Gehennom"
-Entered Gehennom proper (beyond the Valley).
+Entered Gehennom.
 .lp "Candle  "
 Acquired the Candelabrum of Invocation.
 .lp "Book    "
@@ -2789,11 +2789,12 @@ Finding other instances of the same objects doesn't record the
 corresponding achievement.
 .pg
 The \fIMedusa\fP achievement is recorded if she dies for any reason,
-even if you are not directly responsible.
-.pg
-The \fIValley of the Dead\fP is part of \fIGehennom\fP but the
-\fIGehennom\fP achievement doesn't get recorded until you make it past
-that level.
+even if you are not directly responsible, and only if she dies.
+.\"--Reaching the Valley actually records the "entered Gehennom" achievement.
+.\" .pg
+.\" The \fIValley of the Dead\fP is part of \fIGehennom\fP but the
+.\" \fIGehennom\fP achievement doesn't get recorded until you make it past
+.\" that level.
 .
 .hn 1
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