--- ./doc/Makefile.am.orig	2015-10-26 10:10:30.869694900 +0100
+++ ./doc/Makefile.am	2015-10-26 10:10:36.000866600 +0100
@@ -1,8 +1,6 @@
 SUBDIRS =
 
-if BUILD_GTK_DOC
 SUBDIRS += reference
-endif
 
 if ENABLE_DOCS
 SUBDIRS += common cookbook