diff --git a/core/src/main/java/haveno/core/trade/protocol/tasks/BuyerPreparePaymentSentMessage.java b/core/src/main/java/haveno/core/trade/protocol/tasks/BuyerPreparePaymentSentMessage.java
index ad40f761e9..44396b42f6 100644
--- a/core/src/main/java/haveno/core/trade/protocol/tasks/BuyerPreparePaymentSentMessage.java
+++ b/core/src/main/java/haveno/core/trade/protocol/tasks/BuyerPreparePaymentSentMessage.java
@@ -63,6 +63,11 @@ public class BuyerPreparePaymentSentMessage extends TradeTask {
         try {
             runInterceptHook();
 
+            // quit if payout already published
+            if (trade.isPayoutPublished()) {
+                throw new RuntimeException("Cannot mark payment sent because payout already published for " + trade.getClass().getSimpleName() + " " + trade.getShortId());
+            }
+
             // skip if payout tx already created
             if (trade.getSelf().getUnsignedPayoutTxHex() != null) {
                 log.warn("Skipping preparation of payment sent message because payout tx is already created for {} {}", trade.getClass().getSimpleName(), trade.getShortId());