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-rw-r--r--src/drivers/mrc_cache/mrc_cache.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/drivers/mrc_cache/mrc_cache.c b/src/drivers/mrc_cache/mrc_cache.c
index 2800c90b63..fd3853fc0c 100644
--- a/src/drivers/mrc_cache/mrc_cache.c
+++ b/src/drivers/mrc_cache/mrc_cache.c
@@ -22,7 +22,8 @@
#define RECOVERY_MRC_CACHE "RECOVERY_MRC_CACHE"
#define UNIFIED_MRC_CACHE "UNIFIED_MRC_CACHE"
-#define MRC_DATA_SIGNATURE (('M'<<0)|('R'<<8)|('C'<<16)|('D'<<24))
+/* Signature "MRCD" was used for older header format before CB:67670. */
+#define MRC_DATA_SIGNATURE (('M'<<0)|('R'<<8)|('C'<<16)|('d'<<24))
struct mrc_metadata {
uint32_t signature;