diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 9a4f57d7e93169fc372998617f72372cdbbb8ccd..d7f409866cdf5dde28128b56fccf21f8f2773c77 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -6930,7 +6930,7 @@ static int __maybe_unused cpu_period_quota_parse(char *buf,
 {
 	char tok[21];	/* U64_MAX */
 
-	if (!sscanf(buf, "%s %llu", tok, periodp))
+	if (sscanf(buf, "%20s %llu", tok, periodp) < 1)
 		return -EINVAL;
 
 	*periodp *= NSEC_PER_USEC;