diff --git a/src/test/app/TxQ_test.cpp b/src/test/app/TxQ_test.cpp
index ed94ffe1866..31e0b7b8124 100644
--- a/src/test/app/TxQ_test.cpp
+++ b/src/test/app/TxQ_test.cpp
@@ -1019,6 +1019,9 @@ class TxQPosNegFlows_test : public beast::unit_test::suite
         // Fail in preflight
         env(pay(alice, bob, XRP(-1000)), ter(temBAD_AMOUNT));
 
+        // Fail in preflight
+        env(pay(alice, alice, XRP(100)), ter(temREDUNDANT));
+
         // Fail in preclaim
         env(noop(alice), fee(XRP(100000)), ter(terINSUF_FEE_B));
     }