3 files changed, 3 insertions, 3 deletions
diff --git a/examples/widgets/richtext/syntaxhighlighter/highlighter.h b/examples/widgets/richtext/syntaxhighlighter/highlighter.h
index 163b01cda6..a60da038b3 100644
--- a/examples/widgets/richtext/syntaxhighlighter/highlighter.h
+++ b/examples/widgets/richtext/syntaxhighlighter/highlighter.h
@@ -65,7 +65,7 @@ class Highlighter : public QSyntaxHighlighter
     Q_OBJECT
 
 public:
-    Highlighter(QTextDocument *parent = 0);
+    Highlighter(QTextDocument *parent = nullptr);
 
 protected:
     void highlightBlock(const QString &text) override;
diff --git a/examples/widgets/richtext/syntaxhighlighter/mainwindow.h b/examples/widgets/richtext/syntaxhighlighter/mainwindow.h
index b4b58a17e7..a54b810e16 100644
--- a/examples/widgets/richtext/syntaxhighlighter/mainwindow.h
+++ b/examples/widgets/richtext/syntaxhighlighter/mainwindow.h
@@ -65,7 +65,7 @@ class MainWindow : public QMainWindow
     Q_OBJECT
 
 public:
-    MainWindow(QWidget *parent = 0);
+    MainWindow(QWidget *parent = nullptr);
 
 public slots:
     void about();
diff --git a/examples/widgets/richtext/textedit/textedit.h b/examples/widgets/richtext/textedit/textedit.h
index 9e50166c6f..07a307f83d 100644
--- a/examples/widgets/richtext/textedit/textedit.h
+++ b/examples/widgets/richtext/textedit/textedit.h
@@ -70,7 +70,7 @@ class TextEdit : public QMainWindow
     Q_OBJECT
 
 public:
-    TextEdit(QWidget *parent = 0);
+    TextEdit(QWidget *parent = nullptr);
 
     bool load(const QString &f);