diff --git a/gnu/usr.bin/groff/tmac/mdoc.local b/gnu/usr.bin/groff/tmac/mdoc.local
index b11f4b6d8dae..ac0fec07f5de 100644
--- a/gnu/usr.bin/groff/tmac/mdoc.local
+++ b/gnu/usr.bin/groff/tmac/mdoc.local
@@ -37,6 +37,7 @@
 .ds doc-str-Lb-libedit     Line Editor and History Library (libedit, \-ledit)
 .ds doc-str-Lb-libefi      EFI Runtime Services Library (libefi, \-lefi)
 .ds doc-str-Lb-libelf      ELF Parsing Library (libelf, \-lelf)
+.ds doc-str-Lb-libexecinfo Backtrace Access Library (libexecinfo, \-lexecinfo)
 .ds doc-str-Lb-libfetch    File Transfer Library (libfetch, \-lfetch)
 .ds doc-str-Lb-libpmc      Performance Monitoring Counters Interface Library (libpmc, \-lpmc)
 .ds doc-str-Lb-libproc     Processor Monitoring and Analysis Library (libproc, \-lproc)