diff --git a/include/util/tdef.h b/include/util/tdef.h
index f136005026..3fe3214ac4 100644
--- a/include/util/tdef.h
+++ b/include/util/tdef.h
@@ -287,7 +287,7 @@ typedef enum ELogicConditionType {
 #define TSDB_DNODE_VALUE_LEN  256
 
 #define TSDB_CLUSTER_VALUE_LEN   1000
-#define TSDB_GRANT_LOG_COL_LEN   15072
+#define TSDB_GRANT_LOG_COL_LEN   15600
 
 #define TSDB_ACTIVE_KEY_LEN      109
 #define TSDB_CONN_ACTIVE_KEY_LEN 255