diff --git a/dstat_interface/experiments/cal.py b/dstat_interface/experiments/cal.py
index 9abdc203c43d6faabc2fcd0bdf9ce5a4c542c0ba..98d82b6bbd0c15467ee4cc41d65455a5917bcd7d 100755
--- a/dstat_interface/experiments/cal.py
+++ b/dstat_interface/experiments/cal.py
@@ -29,7 +29,7 @@ import serial
 logger = logging.getLogger("dstat.experiments.cal")
 
 import state
-from experiments.experiment_template import Experiment
+from experiments.experiment_template import Experiment, dstat_logger
 
 def measure_offset(time):
     gain_trim_table = [None, 'r100_trim', 'r3k_trim', 'r30k_trim', 'r300k_trim',