diff --git a/video_creation/voices.py b/video_creation/voices.py
index 288db4d..3bbd16c 100644
--- a/video_creation/voices.py
+++ b/video_creation/voices.py
@@ -31,8 +31,10 @@ def save_text_to_mp3(reddit_obj):
         reddit_obj : The reddit object you received from the reddit API in the askreddit.py file.
     """
     env = os.getenv("TTSCHOICE", "")
-    if env.casefold in map(lambda _: _.casefold(), TTSProviders):
-        text_to_mp3 = TTSEngine(get_case_insensitive_key_value(TTSProviders, env), reddit_obj)
+    if env.casefold() in map(lambda _: _.casefold(), TTSProviders):
+        text_to_mp3 = TTSEngine(
+            get_case_insensitive_key_value(TTSProviders, env), reddit_obj
+        )
     else:
         choice = ""
         while True:
@@ -42,13 +44,19 @@ def save_text_to_mp3(reddit_obj):
             if choice.casefold() in map(lambda _: _.casefold(), TTSProviders):
                 break
             print("Unknown Choice")
-        text_to_mp3 = TTSEngine(get_case_insensitive_key_value(TTSProviders, choice), reddit_obj)
+        text_to_mp3 = TTSEngine(
+            get_case_insensitive_key_value(TTSProviders, choice), reddit_obj
+        )
 
     return text_to_mp3.run()
 
 
 def get_case_insensitive_key_value(input_dict, key):
     return next(
-        (value for dict_key, value in input_dict.items() if dict_key.lower() == key.lower()),
+        (
+            value
+            for dict_key, value in input_dict.items()
+            if dict_key.lower() == key.lower()
+        ),
         None,
     )