diff --git a/drivers/md/bcache/sysfs.c b/drivers/md/bcache/sysfs.c
index 01c7c4452a269e379ef1fa02e360b37ecf0412ac..503ad954ccc0ba008357eb3abd07b3f49ea0ae51 100644
--- a/drivers/md/bcache/sysfs.c
+++ b/drivers/md/bcache/sysfs.c
@@ -283,7 +283,9 @@ STORE(__cached_dev)
 	sysfs_strtoul_clamp(writeback_rate_update_seconds,
 			    dc->writeback_rate_update_seconds,
 			    1, WRITEBACK_RATE_UPDATE_SECS_MAX);
-	d_strtoul(writeback_rate_i_term_inverse);
+	sysfs_strtoul_clamp(writeback_rate_i_term_inverse,
+			    dc->writeback_rate_i_term_inverse,
+			    1, UINT_MAX);
 	d_strtoul_nonzero(writeback_rate_p_term_inverse);
 	d_strtoul_nonzero(writeback_rate_minimum);