diff --git a/conservancy_beancount/reports/accrual.py b/conservancy_beancount/reports/accrual.py
index 32e57438ef58a7d9611a4192a93101a54c3f9925..3fb4e5bad134d52df1b54ad00909340a3a88a8d9 100644
--- a/conservancy_beancount/reports/accrual.py
+++ b/conservancy_beancount/reports/accrual.py
@@ -553,7 +553,7 @@ class OutgoingReport(BaseReport):
         if raw_balance != posts.end_balance:
             balance_s = f'{raw_balance} ({balance_s})'
 
-        contract_links = posts.all_meta_links('contract')
+        contract_links = list(posts.all_meta_links('contract'))
         if contract_links:
             contract_s = ' , '.join(self.rt_wrapper.iter_urls(
                 contract_links, missing_fmt='<BROKEN RT LINK: {}>',