diff --git a/src/SessionController.cpp b/src/SessionController.cpp
index 73ceb76e..6c3c292b 100644
--- a/src/SessionController.cpp
+++ b/src/SessionController.cpp
@@ -232,7 +232,7 @@ SessionController::~SessionController()
     if (!_editProfileDialog.isNull()) {
         delete _editProfileDialog.data();
     }
-    if(factory()) {
+    if(factory() != nullptr) {
         factory()->removeClient(this);
     }
 }
@@ -1718,7 +1718,7 @@ void SessionController::showDisplayContextMenu(const QPoint& position)
 
         // prepend content-specific actions such as "Open Link", "Copy Email Address" etc.
         QSharedPointer<Filter::HotSpot> hotSpot = _view->filterActions(position);
-        if (hotSpot) {
+        if (hotSpot != nullptr) {
             popup->insertActions(popup->actions().value(0, nullptr), hotSpot->actions() << contentSeparator );
 
         }
diff --git a/src/TerminalDisplay.cpp b/src/TerminalDisplay.cpp
index d505facc..55b793ad 100644
--- a/src/TerminalDisplay.cpp
+++ b/src/TerminalDisplay.cpp
@@ -4070,7 +4070,7 @@ void CompositeWidgetFocusWatcher::registerWidgetAndChildren(QWidget *widget)
     }
     for (auto *child: widget->children()) {
         auto *childWidget = qobject_cast<QWidget *>(child);
-        if (childWidget) {
+        if (childWidget != nullptr) {
             registerWidgetAndChildren(childWidget);
         }
     }
diff --git a/src/ViewManager.cpp b/src/ViewManager.cpp
index 376c2ad6..1352f1c5 100644
--- a/src/ViewManager.cpp
+++ b/src/ViewManager.cpp
@@ -1023,7 +1023,7 @@ QStringList ViewManager::sessionList()
 
 int ViewManager::currentSession()
 {
-    if (_pluggedController) {
+    if (_pluggedController != nullptr) {
         Q_ASSERT(_pluggedController->session() != nullptr);
         return _pluggedController->session()->sessionId();
     }