diff --git a/src/core/collection/album.rs b/src/core/collection/album.rs
index bb128e0..9e5c7e4 100644
--- a/src/core/collection/album.rs
+++ b/src/core/collection/album.rs
@@ -473,4 +473,12 @@ mod tests {
         let expected = meta.clone().with_date(right.date);
         assert_eq!(expected, left.merge(right));
     }
+
+    #[test]
+    fn secondary_types_all_variants() {
+        let mut variants = AlbumSecondaryType::all_variants().to_vec();
+        variants.sort_unstable();
+        variants.dedup();
+        assert_eq!(variants, AlbumSecondaryType::all_variants().to_vec());
+    }
 }