1 files changed, 3 insertions, 3 deletions
diff --git a/src/zmq/zmqnotificationinterface.cpp b/src/zmq/zmqnotificationinterface.cpp
index c063898056..b637f26fb2 100644
--- a/src/zmq/zmqnotificationinterface.cpp
+++ b/src/zmq/zmqnotificationinterface.cpp
@@ -15,7 +15,7 @@ void zmqError(const char *str)
     LogPrint(BCLog::ZMQ, "zmq: Error: %s, errno=%s\n", str, zmq_strerror(errno));
 }
 
-CZMQNotificationInterface::CZMQNotificationInterface() : pcontext(NULL)
+CZMQNotificationInterface::CZMQNotificationInterface() : pcontext(nullptr)
 {
 }
 
@@ -31,7 +31,7 @@ CZMQNotificationInterface::~CZMQNotificationInterface()
 
 CZMQNotificationInterface* CZMQNotificationInterface::Create()
 {
-    CZMQNotificationInterface* notificationInterface = NULL;
+    CZMQNotificationInterface* notificationInterface = nullptr;
     std::map<std::string, CZMQNotifierFactory> factories;
     std::list<CZMQAbstractNotifier*> notifiers;
 
@@ -62,7 +62,7 @@ CZMQNotificationInterface* CZMQNotificationInterface::Create()
         if (!notificationInterface->Initialize())
         {
             delete notificationInterface;
-            notificationInterface = NULL;
+            notificationInterface = nullptr;
         }
     }