diff --git a/src/ca/Makefile.Unix b/src/ca/Makefile.Unix
index fb2c9edc8..50c57325b 100644
--- a/src/ca/Makefile.Unix
+++ b/src/ca/Makefile.Unix
@@ -13,13 +13,14 @@ SRCS = \
 	../iocinf.c ../access.c ../test_event.c ../service.c \
 	../flow_control.c ../repeater.c ../conn.c ../acctst.c \
 	../syncgrp.c ../if_depen.c ../netdb_depen.c ../bsd_depen.c \
-	../posix_depen.c ../caRepeater.c
+	../gsd_sync_subr.c ../posix_depen.c ../caRepeater.c
 
 OBJS = caRepeater.o
 
 LIBOBJS = \
 	iocinf.o access.o test_event.o service.o flow_control.o repeater.o \
-	conn.o syncgrp.o if_depen.o netdb_depen.o bsd_depen.o posix_depen.o
+	conn.o syncgrp.o if_depen.o netdb_depen.o \
+	gsd_sync_subr.o bsd_depen.o posix_depen.o
 
 LIBNAME = libca.a