diff --git a/Doxyfile.in b/Doxyfile.in
index bddb18c9..750d966c 100644
--- a/Doxyfile.in
+++ b/Doxyfile.in
@@ -49,7 +49,7 @@ WARN_LOGFILE           =
 #---------------------------------------------------------------------------
 # configuration options related to the input files
 #---------------------------------------------------------------------------
-INPUT                  = @top_srcdir@/dbus
+INPUT                  = @top_srcdir@/dbus @top_builddir@/dbus
 FILE_PATTERNS          = *.c *.h
 RECURSIVE              = YES
 #EXCLUDE                = test