diff --git a/Makefile.FreeBSD b/Makefile.FreeBSD
index e4adfca..9378b19 100644
--- a/Makefile.FreeBSD
+++ b/Makefile.FreeBSD
@@ -52,7 +52,7 @@ mandir = $(prefix)/man
 %.o: %.c
 	$(QUIET_CC)$(CC) -o $*.o -c $(CFLAGS) $<
 fio: $(OBJS)
-	$(QUIET_CC)$(CC) $(CFLAGS) -o $@ $(filter %.o,$^) $(EXTLIBS) -lpthread -lm
+	$(QUIET_CC)$(CC) $(CFLAGS) -o $@ $(filter %.o,$^) $(EXTLIBS) -lpthread -lm -lrt
 
 depend:
 	$(QUIET_DEP)$(CC) -MM $(ALL_CFLAGS) $(SOURCE) 1> .depend