diff --git a/src/wallet/asyncrpcoperation_shieldcoinbase.h b/src/wallet/asyncrpcoperation_shieldcoinbase.h
index 7a018e0d7..ce8de1c4d 100644
--- a/src/wallet/asyncrpcoperation_shieldcoinbase.h
+++ b/src/wallet/asyncrpcoperation_shieldcoinbase.h
@@ -49,6 +49,7 @@ public:
         std::vector<ShieldCoinbaseUTXO> inputs,
         std::string toAddress,
         CAmount fee = SHIELD_COINBASE_DEFAULT_MINERS_FEE,
+        CAmount donation,
         UniValue contextInfo = NullUniValue);
     virtual ~AsyncRPCOperation_shieldcoinbase();
 
@@ -73,9 +74,6 @@ private:
     CAmount fee_;
     PaymentAddress tozaddr_;
 
-    uint256 joinSplitPubKey_;
-    unsigned char joinSplitPrivKey_[crypto_sign_SECRETKEYBYTES];
-
     std::vector<ShieldCoinbaseUTXO> inputs_;
 
     TransactionBuilder builder_;
diff --git a/src/wallet/rpcwallet.cpp b/src/wallet/rpcwallet.cpp
index e86bcdd59..89bbe75b6 100644
--- a/src/wallet/rpcwallet.cpp
+++ b/src/wallet/rpcwallet.cpp
@@ -5290,18 +5290,6 @@ UniValue z_sendmany(const UniValue& params, bool fHelp, const CPubKey& mypk)
     mtx.nVersionGroupId = SAPLING_VERSION_GROUP_ID;
     mtx.nVersion = SAPLING_TX_VERSION;
     unsigned int max_tx_size = MAX_TX_SIZE_AFTER_SAPLING;
-    /*
-    const bool sapling = true; //NetworkUpgradeActive(nextBlockHeight, Params().GetConsensus(), Consensus::UPGRADE_SAPLING)) {
-    if (!sapling) {
-        if (NetworkUpgradeActive(nextBlockHeight, Params().GetConsensus(), Consensus::UPGRADE_OVERWINTER)) {
-            mtx.nVersionGroupId = OVERWINTER_VERSION_GROUP_ID;
-            mtx.nVersion        = OVERWINTER_TX_VERSION;
-        } else {
-            mtx.fOverwintered = false;
-            mtx.nVersion      = 2;
-        }
-    }
-    */
 
     // As a sanity check, estimate and verify that the size of the transaction will be valid.
     // Depending on the input notes, the actual tx size may turn out to be larger and perhaps invalid.
@@ -5420,7 +5408,7 @@ UniValue z_shieldcoinbase(const UniValue& params, bool fHelp, const CPubKey& myp
     if (!EnsureWalletIsAvailable(fHelp))
         return NullUniValue;
 
-    if (fHelp || params.size() < 2 || params.size() > 4)
+    if (fHelp || params.size() < 2 || params.size() > 5)
         throw runtime_error(
             "z_shieldcoinbase \"fromaddress\" \"tozaddress\" ( fee ) ( limit )\n"
             "\nShield transparent coinbase funds by sending to a shielded zaddr.  This is an asynchronous operation and utxos"
@@ -5492,6 +5480,14 @@ UniValue z_shieldcoinbase(const UniValue& params, bool fHelp, const CPubKey& myp
         }
     }
 
+    uint8_t donation = 0;
+    if (params.size() > 4) {
+        donation = params[4].get_int();
+        if (donation < 1 || donation > 10 ) {
+            throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid donation percentage, must be an integer between 1 and 10");
+        }
+    }
+
     int nextBlockHeight = chainActive.Height() + 1;
     bool overwinterActive = nextBlockHeight>=1 ? true : false; // NetworkUpgradeActive(nextBlockHeight, Params().GetConsensus(), Consensus::UPGRADE_OVERWINTER);
     unsigned int max_tx_size = MAX_TX_SIZE_AFTER_SAPLING;
@@ -5592,15 +5588,13 @@ UniValue z_shieldcoinbase(const UniValue& params, bool fHelp, const CPubKey& myp
     contextInfo.push_back(Pair("fromaddress", params[0]));
     contextInfo.push_back(Pair("toaddress", params[1]));
     contextInfo.push_back(Pair("fee", ValueFromAmount(nFee)));
+    contextInfo.push_back(Pair("donation", donation));
 
-    // Builder (used if Sapling addresses are involved)
-    TransactionBuilder builder = TransactionBuilder(
-        Params().GetConsensus(), nextBlockHeight, pwalletMain);
+    TransactionBuilder builder = TransactionBuilder( Params().GetConsensus(), nextBlockHeight, pwalletMain);
 
     // Contextual transaction we will build on
     int blockHeight = chainActive.LastTip()->GetHeight();
     nextBlockHeight = blockHeight + 1;
-    // (used if no Sapling addresses are involved)
     CMutableTransaction contextualTx = CreateNewContextualCMutableTransaction(
         Params().GetConsensus(), nextBlockHeight);
     contextualTx.nLockTime = chainActive.LastTip()->GetHeight();
@@ -5611,7 +5605,7 @@ UniValue z_shieldcoinbase(const UniValue& params, bool fHelp, const CPubKey& myp
 
     // Create operation and add to global queue
     std::shared_ptr<AsyncRPCQueue> q = getAsyncRPCQueue();
-    std::shared_ptr<AsyncRPCOperation> operation( new AsyncRPCOperation_shieldcoinbase(builder, contextualTx, inputs, destaddress, nFee, contextInfo) );
+    std::shared_ptr<AsyncRPCOperation> operation( new AsyncRPCOperation_shieldcoinbase(builder, contextualTx, inputs, destaddress, nFee, donation, contextInfo) );
     q->addOperation(operation);
     AsyncRPCOperationId operationId = operation->getId();