diff --git a/nafuma/xanes/io.py b/nafuma/xanes/io.py
index 527f300..0633177 100644
--- a/nafuma/xanes/io.py
+++ b/nafuma/xanes/io.py
@@ -3,7 +3,7 @@ import matplotlib.pyplot as plt
 import os
 import numpy as np
 
-def split_xanes_scan(root, destination=None, replace=False):
+def split_xanes_scan(filename, destination=None, replace=False):
     #root is the path to the beamtime-folder
     #destination should be the path to the processed data