diff --git a/script/EnergyScan.py b/script/EnergyScan.py
index 48d0685..c65d1d9 100644
--- a/script/EnergyScan.py
+++ b/script/EnergyScan.py
@@ -117,7 +117,7 @@ def _startPlot(type):
             TEY.append(aK2raw)
             TEY.append(aK3raw)     
             if (abs(e-cur)) > 0.1:            
-                v = abs((keithley_2a.read() / ((keithley_1a if (type==1) else keithley_3a).read() )))
+                v = abs((keithley_3a.read() / ((keithley_1a if (type==1) else keithley_3a).read() )))
                 s.appendData(e,v)    
                 cur = e                                  
             #    time.sleep(0.2)