diff --git a/include/ascs/ext/unpacker.h b/include/ascs/ext/unpacker.h
index 09509550fb76bf5ff47f779320e3ef9d2b5c3a19..4d23b9796c8af90b4d922374ccdd04eac8feeec3 100644
--- a/include/ascs/ext/unpacker.h
+++ b/include/ascs/ext/unpacker.h
@@ -394,8 +394,7 @@ public:
 		else if (remain_len > 0)
 			memcpy(&*std::begin(raw_buff), pnext, remain_len); //left behind unparsed msg
 
-		//if unpacking failed, successfully parsed msgs will still returned via msg_can(sticky package), please note.
-		return unpack_ok;
+		return true;
 	}
 
 	//a return value of 0 indicates that the read operation is complete. a non-zero value indicates the maximum number