diff --git a/tiddl/tests.py b/tiddl/tests.py
index 80c1f30..e67ab97 100644
--- a/tiddl/tests.py
+++ b/tiddl/tests.py
@@ -134,6 +134,7 @@ def test_formatFilename(self):
                 "videoCover": None,
             },
             "mixes": {"TRACK_MIX": "001ec78dae0d4a470999adefffd570"},
+            "playlistNumber": None
         }
 
         self.assertEqual(formatFilename("{title}", track), ("", "HAUTE COUTURE"))
diff --git a/tiddl/utils.py b/tiddl/utils.py
index 00ba514..50c1734 100644
--- a/tiddl/utils.py
+++ b/tiddl/utils.py
@@ -91,7 +91,7 @@ def formatFilename(template: str, track: Track, playlist=""):
         "playlist": playlist.strip(),
         "released": release_date.strftime("%m-%d-%Y"),
         "year": release_date.strftime("%Y"),
-        "playlist_number": str(track["playlistNumber"]) or ""
+        "playlist_number": str(track.get("playlistNumber", ""))
     }
 
     dirs = template.split("/")