--- sigscheme/doc/Makefile.am.orig	2021-04-29 07:54:51 UTC
+++ sigscheme/doc/Makefile.am
@@ -1,3 +1,5 @@
+docdir = $(prefix)/share/doc/uim/sigscheme
+
 TXTS = index.txt design.txt spec.txt multibyte.txt style.txt \
         global-obj.txt release.txt
 ASCIIDOC_HTMLS = \
