diff --git a/devices/undulator.py b/devices/undulator.py
index 8aed941..4690a5e 100644
--- a/devices/undulator.py
+++ b/devices/undulator.py
@@ -19,8 +19,8 @@ und_name_cal = "SATUN13-UIND030"
 
 class Undulators(Adjustable):
 
-    def __init__(self, scaled=True, name="Athos Undulators", units="eV"):
-        super().__init__(name=name, units=units)
+    def __init__(self, scaled=True, ID="ATHOS_UNDULATORS", name="Athos Undulators", units="eV"):
+        super().__init__(ID, name=name, units=units)
         self.adjs = {name: Undulator(name) for name in und_names}
         self.chic = CHIC(name, units)