diff --git a/src/calibre/ebooks/metadata/book/render.py b/src/calibre/ebooks/metadata/book/render.py
index ee96c20b58..40ef1c9377 100644
--- a/src/calibre/ebooks/metadata/book/render.py
+++ b/src/calibre/ebooks/metadata/book/render.py
@@ -36,7 +36,7 @@ def displayable_field_keys(mi):
         except:
             continue
         if (
-                m is not None and m['kind'] == 'field' and m['datatype'] is not None and
+                m is not None and m.get('kind') == 'field' and m.get('datatype') is not None and
                 k not in ('au_map', 'marked', 'ondevice', 'cover', 'series_sort') and
                 not k.endswith('_index')
         ):