diff --git a/share/man/man5/style.mdoc.5 b/share/man/man5/style.mdoc.5
index 64e2291d1c7..c4c2aa7b369 100644
--- a/share/man/man5/style.mdoc.5
+++ b/share/man/man5/style.mdoc.5
@@ -41,6 +41,12 @@ which renders as:
 Then run
 .Ql Nm make Cm install Cm clean .
 .Ed
+.Pp
+This pollutes the
+.Xr whatis 1
+database, causing
+.Ql whatis clean
+to incorrectly show the page it was written in.
 .El
 .Ss Copyright Header
 Refer to