diff --git a/doc/heimdal.texi b/doc/heimdal.texi
index 0609c4ff3..838271b3d 100644
--- a/doc/heimdal.texi
+++ b/doc/heimdal.texi
@@ -152,6 +152,10 @@ to the following restrictions:
 @copyrightend
 @end titlepage
 
+@macro manpage{man, section}
+@cite{\man\(\section\)}
+@end macro
+
 @c Less filling! Tastes great!
 @iftex
 @parindent=0pt