diff --git a/processcore/processes.h b/processcore/processes.h
--- a/processcore/processes.h
+++ b/processcore/processes.h
@@ -58,7 +58,7 @@
 
     public:
 
-        Processes(const QString &hostname = QString::null, QObject * parent = nullptr);
+        Processes(const QString &hostname = QString(), QObject * parent = nullptr);
         ~Processes() override;
         enum UpdateFlag {
             StandardInformation = 1,