diff --git a/office/bookbinder/slack-desc b/office/bookbinder/slack-desc
index e93803f032..b4bd9fd995 100644
--- a/office/bookbinder/slack-desc
+++ b/office/bookbinder/slack-desc
@@ -6,7 +6,7 @@
 # customary to leave one space after the ':' except on otherwise blank lines.
 
           |-----handy-ruler------------------------------------------------------|
-bookbinder: Bookbinder (A program to create a bindable book from a PDF file)
+bookbinder: bookbinder (A program to create a bindable book from a PDF file)
 bookbinder:
 bookbinder: Bookbinder is a program that will convert a PDF document into
 bookbinder: signatures suitable for traditional bookbinding.