diff --git a/doc/a2ps.texi b/doc/a2ps.texi
index 1b64234..59e0834 100644
--- a/doc/a2ps.texi
+++ b/doc/a2ps.texi
@@ -1,4 +1,5 @@
 \input texinfo @c -*- texinfo -*-
+@documentencoding utf-8
 @c %**start of header
 @setfilename a2ps.info
 @settitle General Purpose PostScript Generating Utility