diff --git a/tasks/tracer.py b/tasks/tracer.py
index 4904f6b..7a9eff8 100644
--- a/tasks/tracer.py
+++ b/tasks/tracer.py
@@ -44,7 +44,7 @@ class TracerTask(ATask):
 		_tc_dtemp_soll = np.empty(0)
 		_tc_dtemp_commanded = np.empty(0)
 
-		filename = os.path.join(self.directory, '') + "brewpi." + time.strftime("%Y%m%d%H%M%S", time.localtime()) + ".mat"
+		filename = os.path.join(self.path, '') + "brewpi." + time.strftime("%Y%m%d%H%M%S", time.localtime()) + ".mat"
 		while True:
 			_timestamp = np.append(_timestamp, timestamp)
 			_sensor_temp = np.append(_sensor_temp, self.sensor.temperature())