diff --git a/hp4155/ADU for double gate devices/lib/help.py b/hp4155/ADU for double gate devices/lib/help.py
index 838e546e49e9c5270ca4cfce56237c94435471e4..9dd08f4d430eb6b411cdd76c701fcd6cc5fff2f3 100644
--- a/hp4155/ADU for double gate devices/lib/help.py	
+++ b/hp4155/ADU for double gate devices/lib/help.py	
@@ -182,7 +182,7 @@ def replot_results(replot_dict,df,points,title):
         if replot_dict['y_scale'].value=='linear':
             y = np.array_split(df[y_col],points)
         else:
-            y = np.array_split(y[x_col].abs(),points)
+            y = np.array_split(df[x_col].abs(),points)
             ax.set_yscale('log')
 
         # check auto limits