diff --git a/import_csv.py b/import_csv.py
index af53fbe..df681c0 100644
--- a/import_csv.py
+++ b/import_csv.py
@@ -39,7 +39,7 @@ with open(args.csv) as f:
             if stack:
                 b = db.session.query(Stack).filter_by(stack_name=stack).first()
                 if b == None:
-                    b = Stack(stack_name=stack, stack_description=None)
+                    b = Stack(stack_name=stack, stack_description=None, stack_author=None)
 
                     db.session.add(b)
                 book.stacks.append(b)