diff --git a/doc/Changelog b/doc/Changelog
index 81abf17f9..6b6a0ebad 100644
--- a/doc/Changelog
+++ b/doc/Changelog
@@ -2,6 +2,8 @@
 	- Fix num_reply_states and num_detached_states counting with
 	  serve_expired_callback.
 	- Cleaner code in mesh_serve_expired_lookup.
+	- Document in unbound.conf manpage that configuration clauses can be
+	  repeated in the configuration file.
 
 6 February 2020: Wouter
 	- Fix num_reply_addr counting in mesh and tcp drop due to size
diff --git a/doc/unbound.conf.5.in b/doc/unbound.conf.5.in
index ebc202882..38c2d2984 100644
--- a/doc/unbound.conf.5.in
+++ b/doc/unbound.conf.5.in
@@ -63,8 +63,10 @@ server:
 	access\-control: 2001:DB8::/64 allow
 .fi
 .SH "FILE FORMAT"
-There must be whitespace between keywords. Attribute keywords end with a colon ':'.
-An attribute is followed by its containing attributes, or a value.
+There must be whitespace between keywords.  Attribute keywords end with a
+colon ':'.  An attribute is followed by a value, or its containing attributes
+in which case it is refered to as a clause.  Clauses can be repeated throughout
+the file (or included files) to group attributes under the same clause.
 .P
 Files can be included using the
 .B include: