diff --git a/devices.py b/devices.py
index 085300e..bc575b9 100644
--- a/devices.py
+++ b/devices.py
@@ -516,10 +516,10 @@ class FrappyConfig(Device):
                 except KeyError:
                     meaning = None
                 if meaning:
-                    head, _, tail = meaning.partition('_')
+                    meaning_name, importance = meaning
+                    head, _, tail = meaning_name.partition('_')
                     if tail == 'regulation':
                         regulationset.add(head)
-                    meaning_name, importance = meaning
                     sample_devices.setdefault(meaning_name, []).append((importance, devname))
 
         previous_aliases = self.get_se_aliases()