diff --git a/doc/Guidebook.mn b/doc/Guidebook.mn
index 5d4b5fd6f..0b0271d7a 100644
--- a/doc/Guidebook.mn
+++ b/doc/Guidebook.mn
@@ -1,3 +1,4 @@
+.\" $Revision$ $Date$
 .ds h0 "NetHack Guidebook
 .ds h1
 .ds h2 %
diff --git a/doc/Guidebook.tex b/doc/Guidebook.tex
index a4ecc8a99..b3ced9efe 100644
--- a/doc/Guidebook.tex
+++ b/doc/Guidebook.tex
@@ -27,6 +27,7 @@
 \begin{document}
 %
 % input file: guidebook.mn
+% $Revision$ $Date$
 %
 %.ds h0 "
 %.ds h1 %.ds h2 \%