diff --git a/doc/Makefile.am b/doc/Makefile.am
index 00d404a..42af37c 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -50,7 +50,7 @@
 	install.texi ipv6.texi kernel.texi main.texi ospf6d.texi ospfd.texi \
 	overview.texi protocol.texi ripd.texi ripngd.texi routemap.texi \
 	snmp.texi vtysh.texi routeserver.texi defines.texi $(figures_png) \
-	snmptrap.texi ospf_fundamentals.texi $(figures_txt)
+	snmptrap.texi ospf_fundamentals.texi isisd.texi $(figures_txt)
 
 .png.eps:
 	$(PNGTOEPS) $< "$@"