diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index 4f966510306ff..b2aa465b5396b 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -3703,6 +3703,12 @@ bool CWallet::CreateTransaction(const std::vector<CRecipient>& vecSend, CWalletT
 
                 unsigned int nBytes = ::GetSerializeSize(txNew, SER_NETWORK, PROTOCOL_VERSION);
 
+                if (nBytes > MAX_STANDARD_TX_SIZE) {
+                    // Do not create oversized transactions (bad-txns-oversize).
+                    strFailReason = _("Transaction too large");
+                    return false;
+                }
+
                 CTransaction txNewConst(txNew);
                 dPriority = txNewConst.ComputePriority(dPriority, nBytes);