diff --git a/include/util/tdef.h b/include/util/tdef.h
index 3ee35b3b6b..82b3d92353 100644
--- a/include/util/tdef.h
+++ b/include/util/tdef.h
@@ -200,7 +200,7 @@ typedef enum ELogicConditionType {
 #define TSDB_STREAM_NAME_LEN          193                                // it is a null-terminated string
 #define TSDB_DB_NAME_LEN              65
 #define TSDB_DB_FNAME_LEN             (TSDB_ACCT_ID_LEN + TSDB_DB_NAME_LEN + TSDB_NAME_DELIMITER_LEN)
-#define TSDB_PRIVILEDGE_CONDITION_LEN 200
+#define TSDB_PRIVILEDGE_CONDITION_LEN 8*1024
 
 #define TSDB_FUNC_NAME_LEN       65
 #define TSDB_FUNC_COMMENT_LEN    1024 * 1024