diff --git a/internal/database/migrations/20260504035824_adjust_recording_day_zero_indexed.down.sql b/internal/database/migrations/20260504035824_adjust_recording_day_zero_indexed.down.sql
index 2f92644d..fccead4d 100644
--- a/internal/database/migrations/20260504035824_adjust_recording_day_zero_indexed.down.sql
+++ b/internal/database/migrations/20260504035824_adjust_recording_day_zero_indexed.down.sql
@@ -12,3 +12,10 @@ WHERE r.deleted_at IS NULL
       WHERE pc.project_flock_kandang_id = r.project_flock_kandangs_id
         AND pc.deleted_at IS NULL
   ) IS NOT NULL;
+
+ALTER TABLE recordings
+DROP CONSTRAINT IF EXISTS chk_recordings_day;
+
+ALTER TABLE recordings
+ADD CONSTRAINT chk_recordings_day
+CHECK (day IS NULL OR day >= 1);
diff --git a/internal/database/migrations/20260504035824_adjust_recording_day_zero_indexed.up.sql b/internal/database/migrations/20260504035824_adjust_recording_day_zero_indexed.up.sql
index 67937750..a5490f53 100644
--- a/internal/database/migrations/20260504035824_adjust_recording_day_zero_indexed.up.sql
+++ b/internal/database/migrations/20260504035824_adjust_recording_day_zero_indexed.up.sql
@@ -1,3 +1,10 @@
+ALTER TABLE recordings
+DROP CONSTRAINT IF EXISTS chk_recordings_day;
+
+ALTER TABLE recordings
+ADD CONSTRAINT chk_recordings_day
+CHECK (day IS NULL OR day >= 0);
+
 UPDATE recordings r
 SET day = (
     SELECT (r.record_datetime::date - MIN(pc.chick_in_date)::date)::int