diff --git a/chapter12/loaves.py b/chapter12/loaves.py
index 4581471..3e034a7 100644
--- a/chapter12/loaves.py
+++ b/chapter12/loaves.py
@@ -3,11 +3,7 @@ from dataclasses import dataclass
 
 import numpy as np
 
-logging.basicConfig(
-    level=logging.DEBUG,
-    format="%(asctime)s %(levelname)s %(message)s",
-    datefmt="%H:%M:%S",
-)
+logging.basicConfig(level=logging.DEBUG)
 logger = logging.getLogger(__name__)