diff --git a/backend/program/symlink.py b/backend/program/symlink.py
index 78fa8c52..333888df 100644
--- a/backend/program/symlink.py
+++ b/backend/program/symlink.py
@@ -10,7 +10,18 @@
 
 
 class Symlinker(threading.Thread):
-    """Content class for mdblist"""
+    """
+    A class that represents a symlinker thread.
+
+    Attributes:
+        media_items (MediaItemContainer): The container of media items.
+        running (bool): Flag indicating if the thread is running.
+        cache (dict): A dictionary to cache file paths.
+        mount_path (str): The absolute path of the container mount.
+        host_path (str): The absolute path of the host mount.
+        symlink_path (str): The path where the symlinks will be created.
+        cache_thread (ThreadRunner): The thread runner for updating the cache.
+    """
 
     def __init__(self, media_items: MediaItemContainer):
         # Symlinking is required
@@ -95,9 +106,10 @@ def _run(self):
                                 episode = obj["episode"]
                                 if type(episode) == list:
                                     for sub_episode in episode:
-                                        season.episodes[sub_episode - 1].set(
-                                            "file", file["filename"]
-                                        )
+                                        if sub_episode - 1 in range(len(season.episodes)):
+                                            season.episodes[sub_episode - 1].set(
+                                                "file", file["filename"]
+                                            )
                                 else:
                                     index = obj["episode"] - 1
                                     if index in range(len(season.episodes)):