diff --git a/script/local.py b/script/local.py
index ad274291..b497277c 100644
--- a/script/local.py
+++ b/script/local.py
@@ -208,7 +208,8 @@ def after_readout(rec):
         append_diag_datasets()
 
 def adjust_sensors():
-    if SENSORS is not None:
+    global SENSORS
+    if (SENSORS is not None) and isinstance(SENSORS,list):
         # Move integration to end
         for dev in [Integration, AngleDistribution]:
             if dev in SENSORS: