diff --git a/tests/journal/parse-errors.test b/tests/journal/parse-errors.test
index d9c8e4d37..dd6eba24b 100644
--- a/tests/journal/parse-errors.test
+++ b/tests/journal/parse-errors.test
@@ -4,6 +4,7 @@
 <
 2018
 
+# XXX depends on the executable being named "hledger" (prepended by GHC.Err.error)
 # 1.
 $ hledger -f - print
 >2