diff --git a/wiki/unix/unix.m4 b/wiki/unix/unix.m4
index 0544bd4..93b47a9 100644
--- a/wiki/unix/unix.m4
+++ b/wiki/unix/unix.m4
@@ -19,7 +19,7 @@ _bentr(`_link(`Joe Ossanna', `https://en.wikipedia.org/wiki/Joe_Ossanna') (Wikip
 _bentr(`_link(`Ken Thompson', `https://en.wikipedia.org/wiki/Ken_Thompson') (Wikipedia)')
 _bentr(`_link(`Unix History', `https://livinginternet.com/i/iw_unix_dev.htm')')
 _bentr(`_link(`The Unix Oral History Project', `https://web.archive.org/web/20080919055843/http://www.princeton.edu:80/~mike/expotape.htm')')
-_bentr(`<A HREF="UNIX Programmers Manual - November 1971">http://www.bitsavers.org/pdf/bellLabs/unix/UNIX_ProgrammersManual_Nov71.pdf')
+_bentr(`<A HREF="UNIX Programmers Manual - November 1971">http://www.bitsavers.org/pdf/bellLabs/unix/UNIX_ProgrammersManual_Nov71.pdf</A>')
 ')
 <P>
 UNIX was an operating systems experiment started when Bell Labs started to leave the Multics project because most of their community felt Multics hadn't delivered what it promised,