diff --git a/mono/Makefile.am b/mono/Makefile.am
index 76704058..498d5367 100644
--- a/mono/Makefile.am
+++ b/mono/Makefile.am
@@ -1,5 +1,7 @@
 DESTDIR=
 
+SUBDIRS=doc
+
 DLLS=dbus-sharp.dll
 NOINST_EXES=test-dbus-sharp.exe