diff --git a/src/masternodes/masternodes.h b/src/masternodes/masternodes.h
index a9db52b6e02..26041cd2169 100644
--- a/src/masternodes/masternodes.h
+++ b/src/masternodes/masternodes.h
@@ -241,13 +241,15 @@ class CMasternodesView : public virtual CStorageView
     void SetMasternodeLastBlockTime(const CKeyID & minter, const uint32_t &blockHeight, const int64_t &time);
     std::optional<int64_t> GetMasternodeLastBlockTime(const CKeyID & minter, const uint32_t height);
     void EraseMasternodeLastBlockTime(const uint256 &minter, const uint32_t& blockHeight);
-    void ForEachMinterNode(std::function<bool(MNBlockTimeKey const &, CLazySerialize<int64_t>)> callback, MNBlockTimeKey const & start = {});
+    void ForEachMinterNode(std::function<bool(MNBlockTimeKey const &, CLazySerialize<int64_t>)> callback,
+        MNBlockTimeKey const & start = {uint256{}, std::numeric_limits<uint32_t>::max()});
 
     // Subnode block times
     void SetSubNodesBlockTime(const CKeyID & minter, const uint32_t &blockHeight, const uint8_t id, const int64_t& time);
     std::vector<int64_t> GetSubNodesBlockTime(const CKeyID & minter, const uint32_t height);
     void EraseSubNodesLastBlockTime(const uint256& nodeId, const uint32_t& blockHeight);
-    void ForEachSubNode(std::function<bool(SubNodeBlockTimeKey const &, CLazySerialize<int64_t>)> callback, SubNodeBlockTimeKey const & start = {});
+    void ForEachSubNode(std::function<bool(SubNodeBlockTimeKey const &, CLazySerialize<int64_t>)> callback,
+        SubNodeBlockTimeKey const & start = {uint256{}, uint8_t{}, std::numeric_limits<uint32_t>::max()});
 
     uint16_t GetTimelock(const uint256& nodeId, const CMasternode& node, const uint64_t height) const;
 
diff --git a/src/masternodes/rpc_masternodes.cpp b/src/masternodes/rpc_masternodes.cpp
index 50b555e51bc..86ad9bd18cd 100644
--- a/src/masternodes/rpc_masternodes.cpp
+++ b/src/masternodes/rpc_masternodes.cpp
@@ -585,7 +585,7 @@ UniValue getmasternodeblocks(const JSONRPCRequest& request) {
 
     UniValue identifier = request.params[0].get_obj();
     int idCount{0};
-    uint256 mn_id;
+    uint256 mn_id{};
 
     if (!identifier["id"].isNull()) {
         mn_id = ParseHashV(identifier["id"], "id");
@@ -652,7 +652,8 @@ UniValue getmasternodeblocks(const JSONRPCRequest& request) {
     if (!request.params[1].isNull()) {
         depth = request.params[1].get_int();
     }
-    UniValue ret(UniValue::VOBJ);
+
+    std::map<uint32_t, uint256, std::greater<>> mintedBlocks;
     auto currentHeight = ::ChainActive().Height();
     depth = std::min(depth, currentHeight);
     auto startBlock = currentHeight - depth;
@@ -671,7 +672,7 @@ UniValue getmasternodeblocks(const JSONRPCRequest& request) {
         auto tip = ::ChainActive()[blockHeight];
         if (tip && depth > 0) {
             lastHeight = tip->nHeight;
-            ret.pushKV(std::to_string(lastHeight), tip->GetBlockHash().ToString());
+            mintedBlocks.emplace(lastHeight, tip->GetBlockHash());
             depth--;
         }
 
@@ -691,10 +692,15 @@ UniValue getmasternodeblocks(const JSONRPCRequest& request) {
     for (; tip && tip->nHeight > creationHeight && depth > 0 && tip->nHeight > startBlock; tip = tip->pprev, --depth) {
         auto id = pcustomcsview->GetMasternodeIdByOperator(tip->minterKey());
         if (id && *id == mn_id) {
-            ret.pushKV(std::to_string(tip->nHeight), tip->GetBlockHash().ToString());
+            mintedBlocks.emplace(tip->nHeight, tip->GetBlockHash());
         }
     }
 
+    UniValue ret(UniValue::VOBJ);
+    for (const auto& [height, hash] : mintedBlocks) {
+        ret.pushKV(std::to_string(height), hash.ToString());
+    }
+
     return GetRPCResultCache().Set(request, ret);
 }