diff --git a/wcs/variables.py b/wcs/variables.py
index 0eb299898..a50910d73 100644
--- a/wcs/variables.py
+++ b/wcs/variables.py
@@ -1000,7 +1000,11 @@ class LazyFieldVarStructured(LazyFieldVarComplex, LazyFieldVarLiveCardMixin):
         if not self._data.get(self._field.id):
             return []
         real_data_source = self._field.get_real_data_source()
-        if real_data_source and real_data_source.get('type', '') == 'wcs:users':
+        if (
+            real_data_source
+            and self._field.type == 'item'
+            and real_data_source.get('type', '') == 'wcs:users'
+        ):
             return ['raw', 'live']
 
         structured_value = self._field.get_structured_value(self._data)
@@ -1008,7 +1012,11 @@ class LazyFieldVarStructured(LazyFieldVarComplex, LazyFieldVarLiveCardMixin):
             return ['raw']
 
         keys = ['raw', 'structured']
-        if real_data_source and real_data_source.get('type', '').startswith('carddef:'):
+        if (
+            real_data_source
+            and self._field.type == 'item'
+            and real_data_source.get('type', '').startswith('carddef:')
+        ):
             try:
                 self.live
             except AttributeError: