diff --git a/dstatInterface/dstat_comm.py b/dstatInterface/dstat_comm.py
index a11f9a5128b9cab41f18f9a96ebc2c09ffb38774..b5ce1ada59ffb554bbc3641306ddb0468760115a 100644
--- a/dstatInterface/dstat_comm.py
+++ b/dstatInterface/dstat_comm.py
@@ -289,7 +289,7 @@ class swv_exp(Experiment):
         self.databuffer = databuffer_instance
 
         self.datatype = "SWVData"
-        self.xlabel = "Voltage (DAC units)"
+        self.xlabel = "Voltage (mV)"
         self.ylabel = "Current (A)"
         self.data = [[],[]] #only difference stored here
         self.datalength = 2 * self.parameters['scans']