diff --git a/include/util/tdef.h b/include/util/tdef.h
index 69d0c1126d..1a440c7268 100644
--- a/include/util/tdef.h
+++ b/include/util/tdef.h
@@ -305,7 +305,7 @@ typedef enum ELogicConditionType {
 #define TSDB_SYNC_APPLYQ_SIZE_LIMIT    512
 #define TSDB_SYNC_NEGOTIATION_WIN      512
 
-#define TSDB_SYNC_SNAP_BUFFER_SIZE 2048
+#define TSDB_SYNC_SNAP_BUFFER_SIZE 1024
 
 #define TSDB_TBNAME_COLUMN_INDEX     (-1)
 #define TSDB_MULTI_TABLEMETA_MAX_NUM 100000  // maximum batch size allowed to load table meta