diff --git a/loginutils/login.c b/loginutils/login.c
index 70e85625b..c3e31d05d 100644
--- a/loginutils/login.c
+++ b/loginutils/login.c
@@ -263,7 +263,7 @@ static void alarm_handler(int sig UNUSED_PARAM)
 	 * We don't want to block here */
 	ndelay_on(1);
 	printf("\r\nLogin timed out after %d seconds\r\n", TIMEOUT);
-	fflush(stdout);
+	fflush(NULL);
 	/* unix API is brain damaged regarding O_NONBLOCK,
 	 * we should undo it, or else we can affect other processes */
 	ndelay_off(1);
diff --git a/util-linux/fsck_minix.c b/util-linux/fsck_minix.c
index 5d1d2af31..cdd306031 100644
--- a/util-linux/fsck_minix.c
+++ b/util-linux/fsck_minix.c
@@ -341,22 +341,24 @@ static int ask(const char *string, int def)
 	}
 	printf(def ? "%s (y/n)? " : "%s (n/y)? ", string);
 	for (;;) {
-		fflush(stdout);
+		fflush(NULL);
 		c = getchar();
 		if (c == EOF) {
 			if (!def)
 				errors_uncorrected = 1;
 			return def;
 		}
-		c = toupper(c);
-		if (c == 'Y') {
+		if (c == '\n')
+			break;
+		c |= 0x20; /* tolower */
+		if (c == 'y') {
 			def = 1;
 			break;
-		} else if (c == 'N') {
+		}
+		if (c == 'n') {
 			def = 0;
 			break;
-		} else if (c == ' ' || c == '\n')
-			break;
+		}
 	}
 	if (def)
 		printf("y\n");
diff --git a/util-linux/rtcwake.c b/util-linux/rtcwake.c
index 4d2be00f5..f90f73ced 100644
--- a/util-linux/rtcwake.c
+++ b/util-linux/rtcwake.c
@@ -141,7 +141,7 @@ int rtcwake_main(int argc UNUSED_PARAM, char **argv)
 		seconds = xatoi(opt_seconds);
 	if (opt & RTCWAKE_OPT_TIME)
 		/* alarm time, time_t (absolute, seconds since 1/1 1970 UTC) */
-		alarm_time = xatoi(opt_time);
+		alarm_time = xatol(opt_time);
 
 	if (!alarm_time && !seconds)
 		bb_error_msg_and_die("must provide wake time");
@@ -160,8 +160,6 @@ int rtcwake_main(int argc UNUSED_PARAM, char **argv)
 
 	/* relative or absolute alarm time, normalized to time_t */
 	sys_time = time(NULL);
-	if (sys_time == (time_t)-1)
-		bb_perror_msg_and_die("read system time");
 	rtc_time = rtc_read_time(fd, utc);
 
 	if (alarm_time) {
@@ -174,7 +172,7 @@ int rtcwake_main(int argc UNUSED_PARAM, char **argv)
 
 	sync();
 	printf("wakeup from \"%s\" at %s", suspend, ctime(&alarm_time));
-	fflush(stdout);
+	fflush(NULL);
 	usleep(10 * 1000);
 
 	if (strcmp(suspend, "on"))