diff --git a/src/wallet/rpcwallet.cpp b/src/wallet/rpcwallet.cpp
index 9050c4b1b..af9064d44 100644
--- a/src/wallet/rpcwallet.cpp
+++ b/src/wallet/rpcwallet.cpp
@@ -4065,13 +4065,17 @@ UniValue z_mergetoaddress(const UniValue& params, bool fHelp)
     contextInfo.push_back(Pair("fee", ValueFromAmount(nFee)));
 
     // Contextual transaction we will build on
+    int nextBlockHeight = chainActive.Height() + 1;
     CMutableTransaction contextualTx = CreateNewContextualCMutableTransaction(
         Params().GetConsensus(),
-        chainActive.Height() + 1);
+        nextBlockHeight);
     bool isShielded = numNotes > 0 || isToZaddr;
     if (contextualTx.nVersion == 1 && isShielded) {
         contextualTx.nVersion = 2; // Tx format should support vjoinsplit
     }
+    if (NetworkUpgradeActive(nextBlockHeight, Params().GetConsensus(), Consensus::UPGRADE_OVERWINTER)) {
+        contextualTx.nExpiryHeight = nextBlockHeight + expiryDelta;
+    }
 
     // Create operation and add to global queue
     std::shared_ptr<AsyncRPCQueue> q = getAsyncRPCQueue();
diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index 253eb6169..e2cd01637 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -2584,6 +2584,7 @@ bool CWallet::CreateTransaction(const vector<CRecipient>& vecSend, CWalletTx& wt
     if (NetworkUpgradeActive(nextBlockHeight, Params().GetConsensus(), Consensus::UPGRADE_OVERWINTER)) {
         if (nextBlockHeight + expiryDelta >= TX_EXPIRY_HEIGHT_THRESHOLD){
             strFailReason = _("nExpiryHeight must be less than TX_EXPIRY_HEIGHT_THRESHOLD.");
+            return false;
         } else {
             txNew.nExpiryHeight = nextBlockHeight + expiryDelta;
         }