--- a/docs/reference/Makefile.am	2018-08-22 18:11:17.138111534 +0100
+++ b/docs/reference/Makefile.am	2018-08-22 18:11:23.105118175 +0100
@@ -80,9 +80,6 @@
 	$(top_builddir)/loudmouth/libloudmouth.la
 
 
-# This includes the standard gtk-doc make rules, copied by gtkdocize.
-include $(top_srcdir)/gtk-doc.make
-
 # Other files to distribute
 # e.g. EXTRA_DIST += version.xml.in
 EXTRA_DIST +=
