--- doc/plugins/Makefile.in.orig	2018-06-29 19:01:40 UTC
+++ doc/plugins/Makefile.in
@@ -333,6 +333,7 @@ top_builddir = @top_builddir@
 top_srcdir = @top_srcdir@
 docfiles = \
 	imapsieve.txt \
+	imap_filter_sieve.txt \
 	sieve_extprograms.txt
 
 @BUILD_DOCS_TRUE@plugins_docdir = $(sieve_docdir)/plugins
