diff --git a/.github/jobs/configure-checks/all.bats b/.github/jobs/configure-checks/all.bats
index 08f7f87a55..99dd81f456 100644
--- a/.github/jobs/configure-checks/all.bats
+++ b/.github/jobs/configure-checks/all.bats
@@ -442,6 +442,7 @@ compile_assertions_finished () {
   run make domserver
   assert_success
   run make judgehost
+  assert_line "SHOW OUTPUT"
   assert_success
 }