diff --git a/src/fdb_tsdb.c b/src/fdb_tsdb.c
index f0c7981..4478fe3 100644
--- a/src/fdb_tsdb.c
+++ b/src/fdb_tsdb.c
@@ -483,8 +483,8 @@ void fdb_tsl_iter_by_time(fdb_tsdb_t db, fdb_time_t from, fdb_time_t to, fdb_tsl
                 /* copy the current using sector status  */
                 sector = db->cur_sec;
             }
-            if ((!found_start_tsl && ((from >= sector.start_time && from <= sector.end_time)
-                            || (sec_addr == oldest_addr && from <= sector.start_time))) || (found_start_tsl)) {
+            if ((found_start_tsl) || (!found_start_tsl && ((from >= sector.start_time && from <= sector.end_time)
+                                       || (sec_addr == oldest_addr && from <= sector.start_time)))) {
                 uint32_t start = sector.addr + SECTOR_HDR_DATA_SIZE, end = sector.end_idx;
 
                 found_start_tsl = true;