diff --git a/src/zmq/zmqabstractnotifier.h b/src/zmq/zmqabstractnotifier.h
--- a/src/zmq/zmqabstractnotifier.h
+++ b/src/zmq/zmqabstractnotifier.h
@@ -7,10 +7,12 @@
 
 #include <zmq/zmqconfig.h>
 
+#include <memory>
+
 class CBlockIndex;
 class CZMQAbstractNotifier;
 
-typedef CZMQAbstractNotifier *(*CZMQNotifierFactory)();
+using CZMQNotifierFactory = std::unique_ptr<CZMQAbstractNotifier> (*)();
 
 class CZMQAbstractNotifier {
 public:
@@ -21,8 +23,9 @@
           outbound_message_high_water_mark(DEFAULT_ZMQ_SNDHWM) {}
     virtual ~CZMQAbstractNotifier();
 
-    template <typename T> static CZMQAbstractNotifier *Create() {
-        return new T();
+    template <typename T>
+    static std::unique_ptr<CZMQAbstractNotifier> Create() {
+        return std::make_unique<T>();
     }
 
     std::string GetType() const { return type; }
diff --git a/src/zmq/zmqnotificationinterface.cpp b/src/zmq/zmqnotificationinterface.cpp
--- a/src/zmq/zmqnotificationinterface.cpp
+++ b/src/zmq/zmqnotificationinterface.cpp
@@ -43,15 +43,15 @@
     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();
+            const auto &factory = entry.second;
+            const std::string address = gArgs.GetArg(arg, "");
+            std::unique_ptr<CZMQAbstractNotifier> notifier = factory();
             notifier->SetType(entry.first);
             notifier->SetAddress(address);
             notifier->SetOutboundMessageHighWaterMark(
                 static_cast<int>(gArgs.GetArg(
                     arg + "hwm", CZMQAbstractNotifier::DEFAULT_ZMQ_SNDHWM)));
-            notifiers.emplace_back(notifier);
+            notifiers.push_back(std::move(notifier));
         }
     }