diff --git a/doc/doxygen/Makefile.am b/doc/doxygen/Makefile.am
index ec43519c..0351c1e0 100644
--- a/doc/doxygen/Makefile.am
+++ b/doc/doxygen/Makefile.am
@@ -2,11 +2,17 @@
 noinst_DATA = xml/client/index.xml xml/server/index.xml
 dist_noinst_DATA = wayland.doxygen.in
 
+scanned_src_files_shared = 				\
+	$(top_srcdir)/src/wayland-util.c	\
+	$(top_srcdir)/src/wayland-util.h
+
 scanned_src_files_client = 				\
+	$(scanned_src_files_shared)			\
 	$(top_srcdir)/src/wayland-client.c	\
 	$(top_srcdir)/src/wayland-client.h
 
 scanned_src_files_server = 				\
+	$(scanned_src_files_shared)			\
 	$(top_srcdir)/src/wayland-server.c	\
 	$(top_srcdir)/src/wayland-server.h