diff --git a/src/metadata-writer/flacmetata.ts b/src/metadata-writer/flacmetata.ts
index e1fb0fb..98848cb 100644
--- a/src/metadata-writer/flacmetata.ts
+++ b/src/metadata-writer/flacmetata.ts
@@ -21,7 +21,9 @@ export const writeMetadataFlac = (
   flac.setTag('TRACKNUMBER=' + track.TRACK_NUMBER);
 
   if (album) {
-    flac.setTag('GENRE=' + album.genres.data[0].name);
+    if (album.genres.data.length > 0) {
+      flac.setTag('GENRE=' + album.genres.data[0].name);
+    }
     flac.setTag('RELEASETYPE=' + album.record_type);
     flac.setTag('ALBUMARTIST=' + album.artist.name);
     flac.setTag('BARCODE=' + album.upc);
diff --git a/src/metadata-writer/id3.ts b/src/metadata-writer/id3.ts
index c22289c..f2a9257 100644
--- a/src/metadata-writer/id3.ts
+++ b/src/metadata-writer/id3.ts
@@ -22,11 +22,13 @@ export const writeMetadataMp3 = (
     .setFrame('TLEN', Number(track.DURATION) * 1000);
 
   if (album) {
-    writer
-      .setFrame(
+    if (album.genres.data.length > 0) {
+      writer.setFrame(
         'TCON',
         album.genres.data.map((g) => g.name),
-      )
+      );
+    }
+    writer
       .setFrame('TPE2', album.artist.name)
       .setFrame('TYER', RELEASE_YEAR)
       .setFrame('TDAT', album.release_date)