diff --git a/src/gui/DatabaseWidget.cpp b/src/gui/DatabaseWidget.cpp
index 0cf418286..6a425b5d7 100644
--- a/src/gui/DatabaseWidget.cpp
+++ b/src/gui/DatabaseWidget.cpp
@@ -825,7 +825,7 @@ void DatabaseWidget::unlockDatabase(bool accepted)
         return;
     }
 
-    Database* db = Q_NULLPTR;
+    Database* db = nullptr;
     if (sender() == m_unlockDatabaseDialog) {
         db = m_unlockDatabaseDialog->database();
     } else if (sender() == m_unlockDatabaseWidget) {
diff --git a/src/gui/UnlockDatabaseDialog.h b/src/gui/UnlockDatabaseDialog.h
index 9a42ed6e2..ef2eabb30 100644
--- a/src/gui/UnlockDatabaseDialog.h
+++ b/src/gui/UnlockDatabaseDialog.h
@@ -31,7 +31,7 @@ class UnlockDatabaseDialog : public QDialog
 {
     Q_OBJECT
 public:
-    explicit UnlockDatabaseDialog(QWidget* parent = Q_NULLPTR);
+    explicit UnlockDatabaseDialog(QWidget* parent = nullptr);
     void setDBFilename(const QString& filename);
     void clearForms();
     Database* database();