diff --git a/svc/product_series_auto_scheduler.go b/svc/product_series_auto_scheduler.go
index 2dd88bd..b9c51b5 100644
--- a/svc/product_series_auto_scheduler.go
+++ b/svc/product_series_auto_scheduler.go
@@ -679,11 +679,9 @@ func productSeriesEnqueueTx(ctx context.Context, tx *sql.Tx, productCode, colorC
 	_, err := tx.ExecContext(ctx, `
 INSERT INTO mk_product_series_recalc_queue (row_key, product_code, color_code, dim3_code, reason, status, attempts, available_at, queued_at, last_error, created_at, updated_at)
 VALUES ($1, $2, $3, $4, $5, 'pending', 0, now(), now(), '', now(), now())
+ON CONFLICT (row_key) WHERE status IN ('pending','processing') DO NOTHING
 `, productSeriesAutoKey(productCode, colorCode, dim3Code), productCode, colorCode, dim3Code, strings.TrimSpace(reason))
 	if err != nil {
-		if pe, ok := err.(*pq.Error); ok && pe != nil && string(pe.Code) == "23505" {
-			return 0, nil
-		}
 		return 0, err
 	}
 	return 1, nil