diff --git a/common/variable.py b/common/variable.py
index f4f1528..82e2050 100644
--- a/common/variable.py
+++ b/common/variable.py
@@ -38,8 +38,8 @@ def _read_config(key):
     except:
         return None
 
-debug_mode = _read_config("common.debug_mode") if _read_config("common.debug_mode") else False
-log_length_limit = _read_config("common.log_length_limit") if _read_config("common.log_length_limit") else 500
+debug_mode = debug_mode if (debug_mode := _read_config("common.debug_mode")) else False
+log_length_limit = log_length_limit if (log_length_limit := _read_config("common.log_length_limit")) else 500
 running = True
 config = {}
 workdir = os.getcwd()