diff --git a/app/checker/checker.go b/app/checker/checker.go
index 74eca6b..b27ef8d 100644
--- a/app/checker/checker.go
+++ b/app/checker/checker.go
@@ -166,20 +166,22 @@ func CheckPlaylists(lists []playlist.Playlist) (int, int) {
 }
 
 func cachePlaylist(pls playlist.Playlist) {
-	if app.Config.Cache.IsActive {
-		jsonBytes, err := json.Marshal(pls)
-		if err != nil {
-			log.Printf("Error while saving playlist to cache: %s", err)
-		}
-
-		ttl := time.Duration(app.Config.Cache.Ttl) * time.Second
-		written := app.Cache.Set(ctx, pls.Code, string(jsonBytes), ttl)
-		if written.Err() != nil {
-			log.Printf("Error while saving playlist to cache: %s", err)
-		}
-
-		log.Println("Cached sucessfully")
+	if !app.Config.Cache.IsActive {
+		return
 	}
+
+	jsonBytes, err := json.Marshal(pls)
+	if err != nil {
+		log.Printf("Error while saving playlist to cache: %s", err)
+	}
+
+	ttl := time.Duration(app.Config.Cache.Ttl) * time.Second
+	written := app.Cache.Set(ctx, pls.Code, string(jsonBytes), ttl)
+	if written.Err() != nil {
+		log.Printf("Error while saving playlist to cache: %s", err)
+	}
+
+	log.Println("Cached sucessfully")
 }
 
 // CheckChannels проверяет каналы и возвращает их же с результатами проверки
@@ -223,9 +225,8 @@ func CheckChannels(pls playlist.Playlist) playlist.Playlist {
 				return
 			}
 
-			//TODO user-agent
 			req.Header.Set("User-Agent", "Mozilla/5.0 WINK/1.31.1 (AndroidTV/9) HlsWinkPlayer")
-			req.Header.Add("Range", "bytes=0-1023") // 1 Kb, but sometimes servers ignore it
+			req.Header.Set("Range", "bytes=0-511") // 512 B, but sometimes servers ignore it
 			resp, err := httpClient.Do(req)
 			tvChannel.CheckedAt = time.Now().Unix()
 			if err != nil {
@@ -237,7 +238,7 @@ func CheckChannels(pls playlist.Playlist) playlist.Playlist {
 			tvChannel.Status = resp.StatusCode
 			tvChannel.IsOnline = tvChannel.Status < http.StatusBadRequest
 			tvChannel.ContentType = resp.Header.Get("Content-Type")
-			chunk := io.LimitReader(resp.Body, 1024) // just for sure
+			chunk := io.LimitReader(resp.Body, 512) // just for sure
 			bodyBytes, _ := io.ReadAll(chunk)
 			bodyString := string(bodyBytes)
 			_ = resp.Body.Close()