diff --git a/src/pg_logger/_config.py b/src/pg_logger/_config.py
index ea56b1d..9c68a62 100644
--- a/src/pg_logger/_config.py
+++ b/src/pg_logger/_config.py
@@ -33,7 +33,7 @@ class LoggerConfig(BaseSettings):
 
     debug: bool = False
     """是否 debug"""
-    width: int = 180
+    width: Optional[int] = None
     """输出时的宽度"""
     keywords: List[str] = []
     """高亮的关键字"""
diff --git a/src/pg_logger/_handler.py b/src/pg_logger/_handler.py
index 49563a0..1eadaa0 100644
--- a/src/pg_logger/_handler.py
+++ b/src/pg_logger/_handler.py
@@ -127,7 +127,7 @@ class Handler(DefaultRichHandler):
     def __init__(
         self,
         *args,
-        width: int = None,
+        width: Optional[int] = None,
         rich_tracebacks: bool = True,
         locals_max_depth: Optional[int] = None,
         tracebacks_max_frames: int = 100,
diff --git a/src/pg_logger/_logger.py b/src/pg_logger/_logger.py
index 9eb1913..f0eaf44 100644
--- a/src/pg_logger/_logger.py
+++ b/src/pg_logger/_logger.py
@@ -97,7 +97,7 @@ class Logger(logging.Logger):
             datefmt=self.config.time_format,
             handlers=[handler, debug_handler, error_handler],
         )
-        if config.capture_warnings:
+        if self.config.capture_warnings:
             logging.captureWarnings(True)
             warnings_logger = logging.getLogger("py.warnings")
             warnings_logger.addHandler(handler)