diff --git a/lisp/Config.x86_freebsd b/lisp/Config.x86_freebsd
index 4e05559b5b85e400ce93ba07486054bf9780fb2c..ce7bcce2f3b1b41cb74f98de1b1108355a062e10 100644
--- a/lisp/Config.x86_freebsd
+++ b/lisp/Config.x86_freebsd
@@ -2,6 +2,6 @@
 include Config.x86_common
 
 UNDEFSYMPATTERN = -Xlinker -u -Xlinker &
-OS_SRC += FreeBSD-os.c undefineds.c
+OS_SRC += FreeBSD-os.c undefineds.c elf.c
 OS_LINK_FLAGS = -dynamic -export-dynamic
 OS_LIBS = -lutil