diff --git a/Whatsapp_Chat_Exporter/__main__.py b/Whatsapp_Chat_Exporter/__main__.py
index 9fc9378..ab0e05b 100644
--- a/Whatsapp_Chat_Exporter/__main__.py
+++ b/Whatsapp_Chat_Exporter/__main__.py
@@ -442,19 +442,35 @@ def main():
                 crypt = Crypt.CRYPT15
             if not os.path.isfile(args.key) and all(char in string.hexdigits for char in args.key.replace(" ", "")):
                 key = bytes.fromhex(args.key.replace(" ", ""))
-                key_stream = False
+                keyfile_stream = False
             else:
                 key = open(args.key, "rb")
-                key_stream = True
+                keyfile_stream = True
             db = open(args.backup, "rb").read()
             if args.wab:
                 wab = open(args.wab, "rb").read()
-                error_wa = android_crypt.decrypt_backup(wab, key, contact_db, crypt, args.showkey, DbType.CONTACT, key_stream)
+                error_wa = android_crypt.decrypt_backup(
+                    wab,
+                    key,
+                    contact_db,
+                    crypt,
+                    args.showkey,
+                    DbType.CONTACT,
+                    keyfile_stream=keyfile_stream
+                )
                 if isinstance(key, io.IOBase):
                     key.seek(0)
             else:
                 error_wa = 0
-            error_message = android_crypt.decrypt_backup(db, key, msg_db, crypt, args.showkey, DbType.MESSAGE, key_stream)
+            error_message = android_crypt.decrypt_backup(
+                db,
+                key,
+                msg_db,
+                crypt,
+                args.showkey,
+                DbType.MESSAGE,
+                keyfile_stream=keyfile_stream
+            )
             if error_wa != 0:
                 error = error_wa
             elif error_message != 0:
diff --git a/Whatsapp_Chat_Exporter/android_crypt.py b/Whatsapp_Chat_Exporter/android_crypt.py
index 45a807b..40a6a38 100644
--- a/Whatsapp_Chat_Exporter/android_crypt.py
+++ b/Whatsapp_Chat_Exporter/android_crypt.py
@@ -86,8 +86,9 @@ def decrypt_backup(
     crypt: Crypt = Crypt.CRYPT14,
     show_crypt15: bool = False,
     db_type: DbType = DbType.MESSAGE,
+    *,
     dry_run: bool = False,
-    key_stream: bool = False
+    keyfile_stream: bool = False
 ) -> int:
     """
     Decrypt the WhatsApp backup database.
@@ -152,7 +153,7 @@ def decrypt_backup(
         raise ValueError("The signature of key file and backup file mismatch")
 
     if crypt == Crypt.CRYPT15:
-        if key_stream:
+        if keyfile_stream:
             main_key, hex_key = _extract_enc_key(key)
         else:
             main_key, hex_key = _derive_main_enc_key(key)