diff --git a/metacore/services.py b/metacore/services.py
index b9783e3e192819429ebb7eef3c80458c102136db..2a626fb595d06686e51f20c5c33778d9f0170d86 100644
--- a/metacore/services.py
+++ b/metacore/services.py
@@ -40,7 +40,8 @@ def get_crossref_test(cursor='*'):
 
             citables = [parse_crossref_citable(it) for it in citables_json]
             # Parser returns None if there's an error
-            errors = any([not i for i in citables if not i])
+            errors = any([not i for i in citables if i == False])
+            orig_citables = citables
             citables = [citable for citable in citables if citable is not None]
 
             # Mass insert in database (will fail on encountering existing documents