diff --git a/lib/nntp/tiny/db.py b/lib/nntp/tiny/db.py
index e72dec0..bd3dfde 100644
--- a/lib/nntp/tiny/db.py
+++ b/lib/nntp/tiny/db.py
@@ -104,7 +104,7 @@ class Database():
 
             for column in table.columns:
                 if column != table.key:
-                    values.append(getattr(obj, column))
+                    values.append(getattr(obj, column, None))
 
         cr = self.db.execute(sql, values)