diff --git a/doc/guide.tex b/doc/guide.tex
index 0ae3053e5..9cfc5e7ee 100644
--- a/doc/guide.tex
+++ b/doc/guide.tex
@@ -3799,7 +3799,7 @@ Protect registrations with CAPTCHA (see section \ref{captcha}). The default is \
 This option sets the minimum informational entropy for passwords. The value \term{Entropy}
 is a number of bits of entropy. The recommended minimum is 32 bits.
 The default is 0, i.e. no checks are performed.
-\titem{\{welcome\_message, Message\}} \ind{options!welcomem}Set a welcome message that
+\titem{\{welcome\_message, \{Subject, Body\}\}} \ind{options!welcomem}Set a welcome message that
   is sent to each newly registered account. The first string is the subject, and
   the second string is the message body.
   In the body you can set a newline with the characters: \verb|\n|