--- a/Makefile.am
+++ b/Makefile.am
@@ -1,7 +1,7 @@
 # Copyright (C) Seiko Epson Corporation 2009.
 SUBDIRS = src
 
-docdir = @prefix@/doc
+docdir = @prefix@/share/doc/${P}
 doc_DATA = \
 	AUTHORS \
 	COPYING \