diff --git a/ChangeLog b/ChangeLog
index 9b921f8..0ace590 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2016-12-28  Ben Elliston  <bje@gnu.org>
+
+	* Makefile (doc/config.guess.1): Depend on config.guess.
+	(doc/config.sub.1): Depend on config.sub.
+
 2016-12-28  Ben Elliston  <bje@gnu.org>
 
 	* doc/config.guess.1: Regenerate.
diff --git a/Makefile b/Makefile
index e4d353d..5aa3200 100644
--- a/Makefile
+++ b/Makefile
@@ -4,10 +4,10 @@ check: check-guess check-sub
 
 manpages: doc/config.guess.1 doc/config.sub.1
 
-doc/config.guess.1:
+doc/config.guess.1: config.guess
 	help2man -N --include=doc/config.guess.x --output=$@ ./config.guess
 
-doc/config.sub.1:
+doc/config.sub.1: config.sub
 	help2man -N --name "validate and canonicalize a configuration triplet" --output=$@ ./config.sub
 
 check-guess: