diff --git a/ckanext/recombinant/logic.py b/ckanext/recombinant/logic.py
index 4eb445e..2fdcaba 100644
--- a/ckanext/recombinant/logic.py
+++ b/ckanext/recombinant/logic.py
@@ -378,15 +378,11 @@ def datastore_fields(fs, text_types):
     """
     return the datastore field definitions for fields fs
     """
-    ds_fields = []
-    for f in fs:
-        # exclude Published Resource fields from the Recombinant Resource DataStore
-        if f.get('published_resource_computed_field', False):
-            continue
-        ds_fields.append({
-            'id': f['datastore_id'],
-            'type': datastore_column_type(f['datastore_type'], text_types)})
-    return ds_fields
+    return [{
+        'id': f['datastore_id'],
+        'type': datastore_column_type(f['datastore_type'], text_types)}
+        for f in fs
+        if not f.get('published_resource_computed_field', False)]
 
 
 def _datastore_match(fs, fields):