diff --git a/test/units/testsuite-07.issue-30412.sh b/test/units/testsuite-07.issue-30412.sh
index 61801c543a..c1cb00e071 100755
--- a/test/units/testsuite-07.issue-30412.sh
+++ b/test/units/testsuite-07.issue-30412.sh
@@ -20,6 +20,7 @@ EOF
 cat >/run/systemd/system/badbin_assert.socket <<EOF
 [Socket]
 ListenStream=@badbin_assert.socket
+FlushPending=yes
 EOF
 
 systemctl daemon-reload