diff --git a/src/inc/ttype.h b/src/inc/ttype.h
index 0c0c64eb77e57cd005ac16261bf3a3565fcc3987..cb1c1b4de81d0bd8c924b3541c413e1f1f329a22 100644
--- a/src/inc/ttype.h
+++ b/src/inc/ttype.h
@@ -182,6 +182,7 @@ typedef struct {
       case TSDB_DATA_TYPE_USMALLINT:           \
         snprintf(_output, (int32_t)(_outputBytes), "%d", *(uint16_t *)(_input));     \
         break;                                 \
+      case TSDB_DATA_TYPE_TIMESTAMP:           \
       case TSDB_DATA_TYPE_BIGINT:              \
         snprintf(_output, (int32_t)(_outputBytes), "%" PRId64, *(int64_t *)(_input));     \
         break;                                 \