diff --git a/tests/test_pay.py b/tests/test_pay.py
index 0a2c36da4..e44780021 100644
--- a/tests/test_pay.py
+++ b/tests/test_pay.py
@@ -4132,3 +4132,14 @@ def test_sendinvoice(node_factory, bitcoind):
 
     l1.rpc.call('sendinvoice', {'offer': refund,
                                 'label': 'test sendinvoice refund'})
+
+
+@pytest.mark.xfail(strict=True)
+def test_self_pay(node_factory):
+    """Repro test for issue 4345: pay ourselves via the pay plugin.
+
+    """
+    l1, l2 = node_factory.line_graph(2, wait_for_announce=True)
+
+    inv = l1.rpc.invoice(10000, 'test', 'test')['bolt11']
+    l1.rpc.pay(inv)