diff --git a/doc/Makefile.am b/doc/Makefile.am
index 6788a1c84..fe997ccea 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -33,5 +33,6 @@ EXTRA_DIST = \
   $(man_MANS) \
   $(extra_TEXINFOS) \
   docstyle.css \
-  brown-paper.css
+  brown-paper.css \
+  exchange-db.png