diff --git a/datalogger-gui.py b/datalogger-gui.py
index 163c831..a1e43b0 100755
--- a/datalogger-gui.py
+++ b/datalogger-gui.py
@@ -60,6 +60,7 @@ class acq_routine():
 		meas = self.instrument.getValue()
 		meas = meas.replace(",", "\t")
 		meas = meas.replace(";", "\t")
+		meas = meas.replace("\t\t", "\t")
 		meas = meas.replace("+", "")
 		meas = meas.replace("E", "e")