diff --git a/n2vc/loggable.py b/n2vc/loggable.py
index 40efa24..87a645d 100644
--- a/n2vc/loggable.py
+++ b/n2vc/loggable.py
@@ -126,7 +126,7 @@
         # datetime
         dt = datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S.%f')
         dt = dt + time_str
-        dt = time_str       # logger already shows datetime
+        # dt = time_str       # logger already shows datetime
 
         # current thread
         if include_thread: