diff --git a/lib/label/label.c b/lib/label/label.c
index dc14bebc3..38db73371 100644
--- a/lib/label/label.c
+++ b/lib/label/label.c
@@ -253,7 +253,7 @@ struct label *label_create(struct labeller *labeller)
 /* global variable for accessing the bcache populated by label scan */
 struct bcache *scan_bcache;
 
-#define BCACHE_BLOCK_SIZE_IN_SECTORS 2048 /* 1MB */
+#define BCACHE_BLOCK_SIZE_IN_SECTORS 256 /* 256*512 = 128K */
 
 static bool _in_bcache(struct device *dev)
 {