diff --git a/src/net_processing.cpp b/src/net_processing.cpp
index b7d2c6480..b33c311f5 100644
--- a/src/net_processing.cpp
+++ b/src/net_processing.cpp
@@ -1583,7 +1583,7 @@ void static ProcessGetBlockData(CNode& pfrom, const CChainParams& chainparams, c
         std::shared_ptr<const CBlock> pblock;
         if (a_recent_block && a_recent_block->GetHash() == pindex->GetBlockHash()) {
             pblock = a_recent_block;
-        } else if (inv.IsMsgWitnessBlk()) {
+        } else if (inv.IsMsgMWEBBlk()) {
             // Fast-path: in this case it is possible to serve the block directly from disk,
             // as the network format matches the format on disk
             std::vector<uint8_t> block_data;
@@ -1601,8 +1601,10 @@ void static ProcessGetBlockData(CNode& pfrom, const CChainParams& chainparams, c
         }
         if (pblock) {
             if (inv.IsMsgBlk()) {
-                connman.PushMessage(&pfrom, msgMaker.Make(SERIALIZE_TRANSACTION_NO_WITNESS, NetMsgType::BLOCK, *pblock));
+                connman.PushMessage(&pfrom, msgMaker.Make(SERIALIZE_TRANSACTION_NO_WITNESS | SERIALIZE_NO_MWEB, NetMsgType::BLOCK, *pblock));
             } else if (inv.IsMsgWitnessBlk()) {
+                connman.PushMessage(&pfrom, msgMaker.Make(SERIALIZE_NO_MWEB, NetMsgType::BLOCK, *pblock));
+            } else if (inv.IsMsgMWEBBlk()) {
                 connman.PushMessage(&pfrom, msgMaker.Make(NetMsgType::BLOCK, *pblock));
             } else if (inv.IsMsgFilteredBlk()) {
                 bool sendMerkleBlock = false;
@@ -1624,7 +1626,7 @@ void static ProcessGetBlockData(CNode& pfrom, const CChainParams& chainparams, c
                     // however we MUST always provide at least what the remote peer needs
                     typedef std::pair<unsigned int, uint256> PairType;
                     for (PairType& pair : merkleBlock.vMatchedTxn)
-                        connman.PushMessage(&pfrom, msgMaker.Make(SERIALIZE_TRANSACTION_NO_WITNESS, NetMsgType::TX, *pblock->vtx[pair.first]));
+                        connman.PushMessage(&pfrom, msgMaker.Make(SERIALIZE_TRANSACTION_NO_WITNESS | SERIALIZE_NO_MWEB, NetMsgType::TX, *pblock->vtx[pair.first]));
                 }
                 // else
                     // no response
@@ -1792,6 +1794,9 @@ static uint32_t GetFetchFlags(const CNode& pfrom) EXCLUSIVE_LOCKS_REQUIRED(cs_ma
     if ((pfrom.GetLocalServices() & NODE_WITNESS) && State(pfrom.GetId())->fHaveWitness) {
         nFetchFlags |= MSG_WITNESS_FLAG;
     }
+    if ((pfrom.GetLocalServices() & NODE_MWEB) && State(pfrom.GetId())->fHaveMWEB) {
+        nFetchFlags |= MSG_MWEB_FLAG;
+    }
     return nFetchFlags;
 }