diff --git a/pkg/timeline/postgres.go b/pkg/timeline/postgres.go
index 2dc0c9b..7ac828d 100644
--- a/pkg/timeline/postgres.go
+++ b/pkg/timeline/postgres.go
@@ -173,18 +173,14 @@ func (p *postgresStream) Count() (int, error) {
 		return -1, err
 	}
 	defer conn.Close()
-	rows, err := conn.QueryContext(context.Background(), "SELECT COUNT(*) FROM items WHERE channel_id = ?", p.channel)
-	if err != nil {
-		return 0, err
+	row := conn.QueryRowContext(context.Background(), "SELECT COUNT(*) FROM items WHERE channel_id = $1", p.channelID)
+	if row == nil {
+		return 0, nil
 	}
-
 	var count int
-	for rows.Next() {
-		err = rows.Scan(&count)
-		if err != nil {
-			return -1, err
-		}
-		break
+	err = row.Scan(&count)
+	if err != nil {
+		return -1, err
 	}
 
 	return count, nil
@@ -224,10 +220,10 @@ func (p *postgresStream) MarkRead(uids []string) error {
 	ctx := context.Background()
 	conn, err := p.database.Conn(ctx)
 	if err != nil {
-		return err
+		return fmt.Errorf("getting connection: %w", err)
 	}
 	defer conn.Close()
-	_, err = conn.ExecContext(context.Background(), `UPDATE "items" SET is_read = 1 WHERE "uid" IN ($1)`, pq.Array(uids))
+	_, err = conn.ExecContext(context.Background(), `UPDATE "items" SET is_read = 1 WHERE "uid" = ANY($1)`, pq.Array(uids))
 	if err != nil {
 		return fmt.Errorf("while marking as read: %w", err)
 	}