diff --git a/delarte.py b/delarte.py
index aec4c05..6b4678c 100755
--- a/delarte.py
+++ b/delarte.py
@@ -118,38 +118,38 @@ def write_subtitles(m3u8_url, base_name):
 
 def main():
     """CLI function, options passed as arguments."""
-    (UI_LANG, _, STREAM_ID, SLUG) = urlparse(sys.argv[1]).path[1:-1].split("/")
-    VERSION = " ".join(sys.argv[2:])
+    (ui_lang, _, stream_id, _slug) = urlparse(sys.argv[1]).path[1:-1].split("/")
+    version = " ".join(sys.argv[2:])
 
-    if UI_LANG not in ("fr", "de", "en", "es", "pl", "it") or _ != "videos":
+    if ui_lang not in ("fr", "de", "en", "es", "pl", "it") or _ != "videos":
         raise ValueError("Invalid URL")
 
-    CONFIG = api_config(UI_LANG, STREAM_ID)
-    TITLE = CONFIG.title
-    VERSIONS = CONFIG.versions
+    config = api_config(ui_lang, stream_id)
+    title = config.title
+    versions = config.versions
 
-    FILENAME = TITLE.replace("/", "-")
+    filename = title.replace("/", "-")
 
-    if VERSION not in VERSIONS:
-        print(TITLE)
-        for v, (_, l) in VERSIONS.items():
+    if version not in versions:
+        print(title)
+        for v, (_, l) in versions.items():
             print(f"\t{v} : {l}")
         exit(1)
 
-    M3U8_URL, VERSION_NAME = VERSIONS[VERSION]
+    m3u8_url, _version_name = versions[version]
 
-    write_subtitles(M3U8_URL, FILENAME)
+    write_subtitles(m3u8_url, filename)
 
     subprocess.run(
         [
             FFMPEG,
             "-i",
-            M3U8_URL,
+            m3u8_url,
             "-c",
             "copy",
             "-bsf:a",
             "aac_adtstoasc",
-            f"{FILENAME}.mp4",
+            f"{filename}.mp4",
         ]
     )