diff --git a/meas_data.py b/meas_data.py
index e46842f..5691dc4 100644
--- a/meas_data.py
+++ b/meas_data.py
@@ -121,7 +121,7 @@ class meas_data:
 	def append(self,value):
 		self.value.append(value)
 		if self.mqtt_bool:
-			thread.start_new_thread(self.send_mqtt,(0,value=value))
+			thread.start_new_thread(self.send_mqtt,(0,value))
 		if (len(self.mval)==0) and (len(self.value)>1):
 			self.stat_mean=numpy.mean(self.value)
 			self.stat_std=numpy.std(self.value)/numpy.sqrt(len(self.value)-1)