diff --git a/src/ec/google/chromeec/ec_commands.h b/src/ec/google/chromeec/ec_commands.h
index 073ae597cf..8de9362540 100644
--- a/src/ec/google/chromeec/ec_commands.h
+++ b/src/ec/google/chromeec/ec_commands.h
@@ -6653,7 +6653,7 @@ enum cbi_data_tag {
 	CBI_TAG_PROVISION_MATRIX_VERSION = 28, /* uint32_t bit field */
 
 	/* Unified Firmware and Second-source Config:
-	 * A fixed-size array of 5 uint32_t values.
+	 * A fixed-size array of 4 uint32_t values.
 	 */
 	CBI_TAG_UFSC = 29,
 
@@ -6661,7 +6661,7 @@ enum cbi_data_tag {
 	CBI_TAG_COUNT,
 };
 
-#define CBI_UFSC_DATA_COUNT 5
+#define CBI_UFSC_DATA_COUNT 4
 
 /* Unified Firmware and Second-source Config (UFSC) data structure */
 struct cbi_ufsc {