diff --git a/doc/Makefile.am b/doc/Makefile.am
index 993ff95..644f2ae 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -1,3 +1,8 @@
 
+docsdir = $(datadir)/doc/asn1c
+
+docs_DATA = *.pdf *.html
+
 EXTRA_DIST = *.pdf *.html
+
 CLEANFILES = *.*~