diff --git a/ChangeLog b/ChangeLog
index a4d2af0..4f77e45 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2018-01-15  Tom Tromey  <tom@tromey.com>
+
+	* jit/jit-dump.c: Document the need for jit-dump.h.
+
 2018-01-10  David Meyer  <pdox@alum.mit.edu>
 
 	* jit/jit-apply.c (jit_apply_builder_add_arguments): fix a bug with
diff --git a/jit/jit-dump.c b/jit/jit-dump.c
index f1a9daa..7d59e6c 100644
--- a/jit/jit-dump.c
+++ b/jit/jit-dump.c
@@ -38,6 +38,10 @@
 
 @cindex jit-dump.h
 
+The library provides some functions for dumping various objects to a
+stream.  These functions are declared in the header
+@code{<jit/jit-dump.h>}.
+
 @*/
 
 /*@