diff --git a/nafuma/xanes/io.py b/nafuma/xanes/io.py
index 70f6891..98a3943 100644
--- a/nafuma/xanes/io.py
+++ b/nafuma/xanes/io.py
@@ -253,3 +253,4 @@ def determine_active_roi(scan_data):
         active_roi = None
 
     return active_roi
+    
\ No newline at end of file