diff --git a/tests/books/accruals.beancount b/tests/books/accruals.beancount
index f005ac67edb78d7660fae077ea922e131c1ff462..14ad6b46ddc45d93a5338d5d212de666559e7062 100644
--- a/tests/books/accruals.beancount
+++ b/tests/books/accruals.beancount
@@ -108,6 +108,8 @@
   Liabilities:Payable:Accounts  -60.00 USD
 
 2010-06-18 * "EuroGov" "European legal fees"
+  ; Multiple rt-ids are used to test proper handling for both
+  ; searching and generating the outgoing report.
   rt-id: "rt:520 rt:525"
   invoice: "rt:520/5200"
   contract: "rt:520/5220"