diff --git a/man/rem2ps.1.in b/man/rem2ps.1.in
index 8b0f25a2..189c0a13 100644
--- a/man/rem2ps.1.in
+++ b/man/rem2ps.1.in
@@ -581,6 +581,11 @@ If the reminder contained a "delta" clause (+n or ++n), this key
 contains the delta value.  If the "delta" value was +n, the value will
 be positive; if it was ++n, the value will be negative.
 .TP
+.B trigbase "\fIdate\fR"
+If the reminder included all of the day, month and year components, then
+\fBtrigbase\fR is the date made from those components, expressed in
+the format \fIYYYY-MM-DD\fR.
+.TP
 .B rep \fIn\fR
 If the reminder contained a "repeat" clause (*n), this key contains
 the repeat value.
diff --git a/man/remind.1.in b/man/remind.1.in
index c61550b9..4ac6ece9 100644
--- a/man/remind.1.in
+++ b/man/remind.1.in
@@ -4406,7 +4406,7 @@ Here is an example of how \fBtrigbase()\fR might be used:
 .PP
 .nf
         REM 2025-05-05 *7 UNTIL 2025-05-26 \\
-           MSG Meeting: week #[(trigdate() - trigbase())/7+1]
+           MSG Meeting: week #[(trigdate() - trigbase())/trigrep()+1]
 .fi
 .PP
 On 2025-05-05, it would print: "Meeting: week #1".  On 2025-05-12,