diff --git a/src/zmq/zmqnotificationinterface.cpp b/src/zmq/zmqnotificationinterface.cpp
index 152bf6f9a..bfe41bbaf 100644
--- a/src/zmq/zmqnotificationinterface.cpp
+++ b/src/zmq/zmqnotificationinterface.cpp
@@ -1,189 +1,189 @@
 // Copyright (c) 2015-2018 The Bitcoin Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
 #include <zmq/zmqnotificationinterface.h>
 #include <zmq/zmqpublishnotifier.h>
 
+#include <primitives/block.h>
 #include <util/system.h>
-#include <validation.h>
 
 void zmqError(const char *str) {
     LogPrint(BCLog::ZMQ, "zmq: Error: %s, errno=%s\n", str,
              zmq_strerror(errno));
 }
 
 CZMQNotificationInterface::CZMQNotificationInterface() : pcontext(nullptr) {}
 
 CZMQNotificationInterface::~CZMQNotificationInterface() {
     Shutdown();
 
     for (std::list<CZMQAbstractNotifier *>::iterator i = notifiers.begin();
          i != notifiers.end(); ++i) {
         delete *i;
     }
 }
 
 std::list<const CZMQAbstractNotifier *>
 CZMQNotificationInterface::GetActiveNotifiers() const {
     std::list<const CZMQAbstractNotifier *> result;
     for (const auto *n : notifiers) {
         result.push_back(n);
     }
     return result;
 }
 
 CZMQNotificationInterface *CZMQNotificationInterface::Create() {
     CZMQNotificationInterface *notificationInterface = nullptr;
     std::map<std::string, CZMQNotifierFactory> factories;
     std::list<CZMQAbstractNotifier *> notifiers;
 
     factories["pubhashblock"] =
         CZMQAbstractNotifier::Create<CZMQPublishHashBlockNotifier>;
     factories["pubhashtx"] =
         CZMQAbstractNotifier::Create<CZMQPublishHashTransactionNotifier>;
     factories["pubrawblock"] =
         CZMQAbstractNotifier::Create<CZMQPublishRawBlockNotifier>;
     factories["pubrawtx"] =
         CZMQAbstractNotifier::Create<CZMQPublishRawTransactionNotifier>;
 
     for (const auto &entry : factories) {
         std::string arg("-zmq" + entry.first);
         if (gArgs.IsArgSet(arg)) {
             CZMQNotifierFactory factory = entry.second;
             std::string address = gArgs.GetArg(arg, "");
             CZMQAbstractNotifier *notifier = factory();
             notifier->SetType(entry.first);
             notifier->SetAddress(address);
             notifier->SetOutboundMessageHighWaterMark(
                 static_cast<int>(gArgs.GetArg(
                     arg + "hwm", CZMQAbstractNotifier::DEFAULT_ZMQ_SNDHWM)));
             notifiers.push_back(notifier);
         }
     }
 
     if (!notifiers.empty()) {
         notificationInterface = new CZMQNotificationInterface();
         notificationInterface->notifiers = notifiers;
 
         if (!notificationInterface->Initialize()) {
             delete notificationInterface;
             notificationInterface = nullptr;
         }
     }
 
     return notificationInterface;
 }
 
 // Called at startup to conditionally set up ZMQ socket(s)
 bool CZMQNotificationInterface::Initialize() {
     int major = 0, minor = 0, patch = 0;
     zmq_version(&major, &minor, &patch);
     LogPrint(BCLog::ZMQ, "zmq: version %d.%d.%d\n", major, minor, patch);
 
     LogPrint(BCLog::ZMQ, "zmq: Initialize notification interface\n");
     assert(!pcontext);
 
     pcontext = zmq_ctx_new();
 
     if (!pcontext) {
         zmqError("Unable to initialize context");
         return false;
     }
 
     std::list<CZMQAbstractNotifier *>::iterator i = notifiers.begin();
     for (; i != notifiers.end(); ++i) {
         CZMQAbstractNotifier *notifier = *i;
         if (notifier->Initialize(pcontext)) {
             LogPrint(BCLog::ZMQ, "zmq: Notifier %s ready (address = %s)\n",
                      notifier->GetType(), notifier->GetAddress());
         } else {
             LogPrint(BCLog::ZMQ, "zmq: Notifier %s failed (address = %s)\n",
                      notifier->GetType(), notifier->GetAddress());
             break;
         }
     }
 
     if (i != notifiers.end()) {
         return false;
     }
 
     return true;
 }
 
 // Called during shutdown sequence
 void CZMQNotificationInterface::Shutdown() {
     LogPrint(BCLog::ZMQ, "zmq: Shutdown notification interface\n");
     if (pcontext) {
         for (std::list<CZMQAbstractNotifier *>::iterator i = notifiers.begin();
              i != notifiers.end(); ++i) {
             CZMQAbstractNotifier *notifier = *i;
             LogPrint(BCLog::ZMQ, "zmq: Shutdown notifier %s at %s\n",
                      notifier->GetType(), notifier->GetAddress());
             notifier->Shutdown();
         }
         zmq_ctx_term(pcontext);
 
         pcontext = nullptr;
     }
 }
 
 void CZMQNotificationInterface::UpdatedBlockTip(const CBlockIndex *pindexNew,
                                                 const CBlockIndex *pindexFork,
                                                 bool fInitialDownload) {
     // In IBD or blocks were disconnected without any new ones
     if (fInitialDownload || pindexNew == pindexFork) {
         return;
     }
 
     for (std::list<CZMQAbstractNotifier *>::iterator i = notifiers.begin();
          i != notifiers.end();) {
         CZMQAbstractNotifier *notifier = *i;
         if (notifier->NotifyBlock(pindexNew)) {
             i++;
         } else {
             notifier->Shutdown();
             i = notifiers.erase(i);
         }
     }
 }
 
 void CZMQNotificationInterface::TransactionAddedToMempool(
     const CTransactionRef &ptx) {
     // Used by BlockConnected and BlockDisconnected as well, because they're all
     // the same external callback.
     const CTransaction &tx = *ptx;
 
     for (std::list<CZMQAbstractNotifier *>::iterator i = notifiers.begin();
          i != notifiers.end();) {
         CZMQAbstractNotifier *notifier = *i;
         if (notifier->NotifyTransaction(tx)) {
             i++;
         } else {
             notifier->Shutdown();
             i = notifiers.erase(i);
         }
     }
 }
 
 void CZMQNotificationInterface::BlockConnected(
     const std::shared_ptr<const CBlock> &pblock,
     const CBlockIndex *pindexConnected,
     const std::vector<CTransactionRef> &vtxConflicted) {
     for (const CTransactionRef &ptx : pblock->vtx) {
         // Do a normal notify for each transaction added in the block
         TransactionAddedToMempool(ptx);
     }
 }
 
 void CZMQNotificationInterface::BlockDisconnected(
     const std::shared_ptr<const CBlock> &pblock,
     const CBlockIndex *pindexDisconnected) {
     for (const CTransactionRef &ptx : pblock->vtx) {
         // Do a normal notify for each transaction removed in block
         // disconnection
         TransactionAddedToMempool(ptx);
     }
 }
 
 CZMQNotificationInterface *g_zmq_notification_interface = nullptr;