diff --git a/play-dl/SoundCloud/index.ts b/play-dl/SoundCloud/index.ts
index 55efd7a..776ff8c 100644
--- a/play-dl/SoundCloud/index.ts
+++ b/play-dl/SoundCloud/index.ts
@@ -39,9 +39,9 @@ export async function stream(url: string, quality?: number): Promise<Stream> {
     if (data instanceof SoundCloudPlaylist) throw new Error("Streams can't be created from Playlist url");
 
     const HLSformats = parseHlsFormats(data.formats);
-    if (!quality) quality = HLSformats.length - 1;
+    if (typeof quality !== 'number') quality = HLSformats.length - 1;
     else if (quality <= 0) quality = 0;
-    else if (quality > HLSformats.length) quality = HLSformats.length - 1;
+    else if (quality >= HLSformats.length) quality = HLSformats.length - 1;
     const req_url = HLSformats[quality].url + '?client_id=' + soundData.client_id;
     const s_data = JSON.parse(await request(req_url));
     const type = HLSformats[quality].format.mime_type.startsWith('audio/ogg')
@@ -52,9 +52,9 @@ export async function stream(url: string, quality?: number): Promise<Stream> {
 
 export async function stream_from_info(data: SoundCloudTrack, quality?: number): Promise<Stream> {
     const HLSformats = parseHlsFormats(data.formats);
-    if (!quality) quality = HLSformats.length - 1;
+    if (typeof quality !== 'number') quality = HLSformats.length - 1;
     else if (quality <= 0) quality = 0;
-    else if (quality > HLSformats.length) quality = HLSformats.length - 1;
+    else if (quality >= HLSformats.length) quality = HLSformats.length - 1;
     const req_url = HLSformats[quality].url + '?client_id=' + soundData.client_id;
     const s_data = JSON.parse(await request(req_url));
     const type = HLSformats[quality].format.mime_type.startsWith('audio/ogg')
diff --git a/play-dl/YouTube/stream.ts b/play-dl/YouTube/stream.ts
index 15f840d..02332d0 100644
--- a/play-dl/YouTube/stream.ts
+++ b/play-dl/YouTube/stream.ts
@@ -54,9 +54,9 @@ export async function stream(url: string, options: StreamOptions = {}): Promise<
     }
 
     const audioFormat = parseAudioFormats(info.format);
-    if (!options.quality) options.quality = audioFormat.length - 1;
+    if (typeof options.quality !== 'number') options.quality = audioFormat.length - 1;
     else if (options.quality <= 0) options.quality = 0;
-    else if (options.quality > audioFormat.length) options.quality = audioFormat.length - 1;
+    else if (options.quality >= audioFormat.length) options.quality = audioFormat.length - 1;
     final.push(audioFormat[options.quality]);
     let type: StreamType =
         audioFormat[options.quality].codec === 'opus' && audioFormat[options.quality].container === 'webm'
@@ -87,9 +87,9 @@ export async function stream_from_info(info: InfoData, options: StreamOptions =
     }
 
     const audioFormat = parseAudioFormats(info.format);
-    if (!options.quality) options.quality = audioFormat.length - 1;
+    if (typeof options.quality !== 'number') options.quality = audioFormat.length - 1;
     else if (options.quality <= 0) options.quality = 0;
-    else if (options.quality > audioFormat.length) options.quality = audioFormat.length - 1;
+    else if (options.quality >= audioFormat.length) options.quality = audioFormat.length - 1;
     final.push(audioFormat[options.quality]);
     let type: StreamType =
         audioFormat[options.quality].codec === 'opus' && audioFormat[options.quality].container === 'webm'