diff --git a/script/local.py b/script/local.py
index f5eda4c..7fc0810 100644
--- a/script/local.py
+++ b/script/local.py
@@ -148,7 +148,7 @@ def get_diag_channels():
     for name in "h", "k", "l", "wavelength":
         dev = get_device(name)
         if dev is not None:
-            diag_channels.append(h)
+            diag_channels.append(dev)
 
     return diag_channels