--- doc/texinfo/texinfo.tex.orig	2009-10-18 12:35:14 UTC
+++ doc/texinfo/texinfo.tex
@@ -1,3 +1,4 @@
+\let\pdfoutput\undefined
 % texinfo.tex -- TeX macros to handle Texinfo files.
 %
 % Load plain if necessary, i.e., if running under initex.