diff --git a/tests/test_normalize.py b/tests/test_normalize.py
index e84b1b5..9712591 100644
--- a/tests/test_normalize.py
+++ b/tests/test_normalize.py
@@ -87,6 +87,11 @@ def test_strip_accents_idempotent() -> None:
         ("Sasha Paige ft.Martin Spell", "Martin Spell", True),
         # ft wewnatrz slowa to nie separator.
         ("Craft Beer Night", "Craft Beer", True),
+        # Zlepek tez nie przechodzi przez separator: „dick" i „ft" to sasiednie czlony
+        # tylko dopoki tytul nie jest ciety, a byly sklejane w jedno nazwisko.
+        ("Twins Sasha Paige Share the Dick ft. Martin Spell", "Dickft", False),
+        ("Sasha Paige feat Martin Spell", "Paigefeat", False),
+        ("Sasha Paige ft. Martin Spell", "Paige Ft Martin", False),
     ],
 )
 def test_person_named_in(title: str, person: str, expected: bool) -> None: