diff --git a/utilities/database_upgrader.py b/utilities/database_upgrader.py
index 741fa58..0ca3b59 100644
--- a/utilities/database_upgrader.py
+++ b/utilities/database_upgrader.py
@@ -115,6 +115,34 @@ def upgrade_4_to_5(ycdldb):
             [uploads_playlist, channel]
         )
 
+def upgrade_5_to_6(ycdldb):
+    '''
+    In this version, the `directory` column of the channels table was renamed
+    to `download_directory` to be in line with the default config's name for
+    the same value, and the `queuefile_extension` column was added.
+    '''
+    ycdldb.sql.execute('ALTER TABLE channels RENAME TO channels_old')
+    ycdldb.sql.execute('''
+        CREATE TABLE channels(
+            id TEXT,
+            name TEXT,
+            uploads_playlist TEXT,
+            download_directory TEXT COLLATE NOCASE,
+            queuefile_extension TEXT COLLATE NOCASE,
+            automark TEXT
+        )
+    ''')
+    ycdldb.sql.execute('''
+        INSERT INTO channels SELECT
+            id,
+            name,
+            uploads_playlist,
+            directory,
+            NULL,
+            automark
+        FROM channels_old
+    ''')
+    ycdldb.sql.execute('DROP TABLE channels_old')
 
 def upgrade_all(data_directory):
     '''
diff --git a/ycdl/constants.py b/ycdl/constants.py
index 6f566db..b652443 100644
--- a/ycdl/constants.py
+++ b/ycdl/constants.py
@@ -1,6 +1,6 @@
 from voussoirkit import sqlhelpers
 
-DATABASE_VERSION = 5
+DATABASE_VERSION = 6
 DB_VERSION_PRAGMA = f'''
 PRAGMA user_version = {DATABASE_VERSION};
 '''
@@ -19,7 +19,8 @@ CREATE TABLE IF NOT EXISTS channels(
     id TEXT,
     name TEXT,
     uploads_playlist TEXT,
-    directory TEXT COLLATE NOCASE,
+    download_directory TEXT COLLATE NOCASE,
+    queuefile_extension TEXT COLLATE NOCASE,
     automark TEXT
 );
 CREATE TABLE IF NOT EXISTS videos(
diff --git a/ycdl/objects.py b/ycdl/objects.py
index 2c225d2..49c2855 100644
--- a/ycdl/objects.py
+++ b/ycdl/objects.py
@@ -21,7 +21,8 @@ class Channel(Base):
         self.id = db_row['id']
         self.name = db_row['name']
         self.uploads_playlist = db_row['uploads_playlist']
-        self.directory = db_row['directory']
+        self.download_directory = db_row['download_directory']
+        self.queuefile_extension = db_row['queuefile_extension']
         self.automark = db_row['automark'] or "pending"
 
     def delete(self, commit=True):
diff --git a/ycdl/ycdldb.py b/ycdl/ycdldb.py
index 36a8511..5d8e691 100644
--- a/ycdl/ycdldb.py
+++ b/ycdl/ycdldb.py
@@ -109,6 +109,7 @@ class YCDLDBChannelMixin:
             *,
             commit=True,
             download_directory=None,
+            queuefile_extension=None,
             get_videos=False,
             name=None,
         ):
@@ -127,7 +128,8 @@ class YCDLDBChannelMixin:
             'id': channel_id,
             'name': name,
             'uploads_playlist': self.youtube.get_user_uploads_playlist_id(channel_id),
-            'directory': download_directory,
+            'download_directory': download_directory,
+            'queuefile_extension': queuefile_extension,
             'automark': "pending",
         }
         self.sql_insert(table='channels', data=data)
@@ -254,15 +256,14 @@ class YCDLDBVideoMixin:
 
         try:
             channel = self.get_channel(video.author_id)
-            download_directory = channel.directory
-            download_directory = download_directory or self.config['download_directory']
+            download_directory = channel.download_directory or self.config['download_directory']
         except exceptions.NoSuchChannel:
             download_directory = self.config['download_directory']
 
         download_directory = pathclass.Path(download_directory)
         os.makedirs(download_directory.absolute_path, exist_ok=True)
 
-        extension = self.config['queuefile_extension']
+        extension = channel.queuefile_extension or self.config['queuefile_extension']
         queuefile = download_directory.with_child(video_id).replace_extension(extension)
         open(queuefile.absolute_path, 'a').close()