diff --git a/util-linux/Makefile.in b/util-linux/Makefile.in
index 69fdd10..f6fdba9 100644
--- a/util-linux/Makefile.in
+++ b/util-linux/Makefile.in
@@ -33,6 +33,7 @@
 UTILLINUX-$(CONFIG_RDATE)         +=rdate.o
 UTILLINUX-$(CONFIG_READPROFILE)   +=readprofile.o
 UTILLINUX-$(CONFIG_SWAPONOFF)     +=swaponoff.o
+UTILLINUX-$(CONFIG_SWITCH_ROOT)     +=switch_root.o
 UTILLINUX-$(CONFIG_UMOUNT)        +=umount.o
 
 libraries-y+=$(UTILLINUX_DIR)$(UTILLINUX_AR)
diff --git a/util-linux/rdate.c b/util-linux/rdate.c
index e282460..cabcc7d 100644
--- a/util-linux/rdate.c
+++ b/util-linux/rdate.c
@@ -62,11 +62,10 @@
 int rdate_main(int argc, char **argv)
 {
 	time_t remote_time;
+	unsigned long flags;
 	
-	unsigned long flags = bb_getopt_ulflags(argc, argv, "sp");
-	
-	if (!flags || argc == optind)
-		bb_show_usage();
+	bb_opt_complementally = "-1";
+	flags = bb_getopt_ulflags(argc, argv, "sp");
 	
 	remote_time = askremotedate(argv[optind]);