diff --git a/woa/init.py b/woa/init.py
index 18737e0..958d332 100644
--- a/woa/init.py
+++ b/woa/init.py
@@ -167,7 +167,7 @@ class WOAHandler:
 				return True, echo_str
 			else:
 				# POST 请求：验证签名 (不返回 echo_str，只返回 True)
-				self.crypto._check_signature(signature, timestamp, nonce)
+				self.crypto._check_signature(signature, timestamp, nonce, '')
 				return True, None
 		except InvalidSignatureException:
 			logger.warning("签名验证失败")