diff --git a/src/inc/tcq.h b/src/inc/tcq.h
index 7549c3d498a02e948212c38b071701aa55adc2fc..27c043f960c2b77609b59f2188bfa0fa67c4b3b1 100644
--- a/src/inc/tcq.h
+++ b/src/inc/tcq.h
@@ -27,7 +27,7 @@ typedef struct {
   int32_t  vgId;
   char     user[TSDB_USER_LEN];
   char     pass[TSDB_KEY_LEN];
-  char     db[TSDB_DB_NAME_LEN];
+  char     db[TSDB_ACCT_ID_LEN + TSDB_DB_NAME_LEN];
   FCqWrite cqWrite;
 } SCqCfg;