diff --git a/dash-docs/protocol-documentation.md b/dash-docs/protocol-documentation.md
index 2945b0caf..6d70fb534 100644
--- a/dash-docs/protocol-documentation.md
+++ b/dash-docs/protocol-documentation.md
@@ -67,7 +67,7 @@ Whenever a masternode comes online or a client is syncing, they will send this m
 | 8 | sigTime | int64_t | Time which the signature was created
 | 4 | nProtocolVersion | int | The protocol version of the masternode
 | # | lastPing | CMasternodePing | The last known ping of the masternode
-| 8 | nLastDsq | int64_t | The last time the masternode sent a DSQ message (for mixing)
+| 8 | nLastDsq | int64_t | The last time the masternode sent a DSQ message (for mixing) (DEPRECATED)
 
 ### MNPING - "mnp"
 
diff --git a/src/main.cpp b/src/main.cpp
index 50b8766dc..1504fb3ff 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -5145,6 +5145,10 @@ void static ProcessGetData(CNode* pfrom, const Consensus::Params& consensusParam
                         CDataStream ss(SER_NETWORK, PROTOCOL_VERSION);
                         ss.reserve(1000);
                         ss << mnodeman.mapSeenMasternodeBroadcast[inv.hash];
+                        // backward compatibility patch
+                        if(pfrom->nVersion < 70204) {
+                            ss << (int64_t)0;
+                        }
                         pfrom->PushMessage(NetMsgType::MNANNOUNCE, ss);
                         pushed = true;
                     }
diff --git a/src/masternode.cpp b/src/masternode.cpp
index 1f865aff1..0a0b308f6 100644
--- a/src/masternode.cpp
+++ b/src/masternode.cpp
@@ -90,7 +90,7 @@ CMasternode::CMasternode(const CMasternodeBroadcast& mnb) :
     lastPing(mnb.lastPing),
     vchSig(mnb.vchSig),
     sigTime(mnb.sigTime),
-    nLastDsq(mnb.nLastDsq),
+    nLastDsq(0),
     nTimeLastChecked(0),
     nTimeLastPaid(0),
     nTimeLastWatchdogVote(mnb.sigTime),
diff --git a/src/masternode.h b/src/masternode.h
index c4b655dde..b48a0917d 100644
--- a/src/masternode.h
+++ b/src/masternode.h
@@ -342,7 +342,6 @@ public:
         READWRITE(sigTime);
         READWRITE(nProtocolVersion);
         READWRITE(lastPing);
-        READWRITE(nLastDsq);
     }
 
     uint256 GetHash() const
diff --git a/src/masternodeman.cpp b/src/masternodeman.cpp
index b7480ef42..d2a7b237f 100644
--- a/src/masternodeman.cpp
+++ b/src/masternodeman.cpp
@@ -19,7 +19,7 @@
 /** Masternode manager */
 CMasternodeMan mnodeman;
 
-const std::string CMasternodeMan::SERIALIZATION_VERSION_STRING = "CMasternodeMan-Version-1";
+const std::string CMasternodeMan::SERIALIZATION_VERSION_STRING = "CMasternodeMan-Version-2";
 
 struct CompareLastPaidBlock
 {
@@ -700,6 +700,12 @@ void CMasternodeMan::ProcessMessage(CNode* pfrom, std::string& strCommand, CData
         CMasternodeBroadcast mnb;
         vRecv >> mnb;
 
+        // backward compatibility patch
+        if(pfrom->nVersion < 70204) {
+            int64_t nLastDsqDummy;
+            vRecv >> nLastDsqDummy;
+        }
+
         int nDos = 0;
 
         if (CheckMnbAndUpdateMasternodeList(mnb, nDos)) {