diff --git a/drivers/md/bcache/sysfs.c b/drivers/md/bcache/sysfs.c
index 26f035a0c5b9..d2e5c9892d4d 100644
--- a/drivers/md/bcache/sysfs.c
+++ b/drivers/md/bcache/sysfs.c
@@ -16,7 +16,7 @@
 #include <linux/sort.h>
 #include <linux/sched/clock.h>
 
-/* Default is -1; we skip past it for struct cached_dev's cache mode */
+/* Default is 0 ("writethrough") */
 static const char * const bch_cache_modes[] = {
 	"writethrough",
 	"writeback",
@@ -25,7 +25,7 @@ static const char * const bch_cache_modes[] = {
 	NULL
 };
 
-/* Default is -1; we skip past it for stop_when_cache_set_failed */
+/* Default is 0 ("auto") */
 static const char * const bch_stop_on_failure_modes[] = {
 	"auto",
 	"always",