3 files changed, 6 insertions, 6 deletions
diff --git a/src/printsupport/dialogs/qabstractprintdialog.h b/src/printsupport/dialogs/qabstractprintdialog.h
index cf55cfade8..6148502096 100644
--- a/src/printsupport/dialogs/qabstractprintdialog.h
+++ b/src/printsupport/dialogs/qabstractprintdialog.h
@@ -74,7 +74,7 @@ public:
     Q_DECLARE_FLAGS(PrintDialogOptions, PrintDialogOption)
 
 #ifndef QT_NO_PRINTDIALOG
-    explicit QAbstractPrintDialog(QPrinter *printer, QWidget *parent = 0);
+    explicit QAbstractPrintDialog(QPrinter *printer, QWidget *parent = Q_NULLPTR);
     ~QAbstractPrintDialog();
 
     virtual int exec() = 0;
@@ -101,7 +101,7 @@ public:
     QPrinter *printer() const;
 
 protected:
-    QAbstractPrintDialog(QAbstractPrintDialogPrivate &ptr, QPrinter *printer, QWidget *parent = 0);
+    QAbstractPrintDialog(QAbstractPrintDialogPrivate &ptr, QPrinter *printer, QWidget *parent = Q_NULLPTR);
 
 private:
     Q_DISABLE_COPY(QAbstractPrintDialog)
diff --git a/src/printsupport/dialogs/qpagesetupdialog.h b/src/printsupport/dialogs/qpagesetupdialog.h
index 43b642b8f1..824d63f2d7 100644
--- a/src/printsupport/dialogs/qpagesetupdialog.h
+++ b/src/printsupport/dialogs/qpagesetupdialog.h
@@ -51,8 +51,8 @@ class Q_PRINTSUPPORT_EXPORT QPageSetupDialog : public QDialog
     Q_DECLARE_PRIVATE(QPageSetupDialog)
 
 public:
-    explicit QPageSetupDialog(QPrinter *printer, QWidget *parent = 0);
-    explicit QPageSetupDialog(QWidget *parent = 0);
+    explicit QPageSetupDialog(QPrinter *printer, QWidget *parent = Q_NULLPTR);
+    explicit QPageSetupDialog(QWidget *parent = Q_NULLPTR);
     ~QPageSetupDialog();
 
 #if defined(Q_OS_MAC) || defined(Q_OS_WIN)
diff --git a/src/printsupport/dialogs/qprintdialog.h b/src/printsupport/dialogs/qprintdialog.h
index 1332fcc1fd..cf0115cc28 100644
--- a/src/printsupport/dialogs/qprintdialog.h
+++ b/src/printsupport/dialogs/qprintdialog.h
@@ -53,8 +53,8 @@ class Q_PRINTSUPPORT_EXPORT QPrintDialog : public QAbstractPrintDialog
     Q_PROPERTY(PrintDialogOptions options READ options WRITE setOptions)
 
 public:
-    explicit QPrintDialog(QPrinter *printer, QWidget *parent = 0);
-    explicit QPrintDialog(QWidget *parent = 0);
+    explicit QPrintDialog(QPrinter *printer, QWidget *parent = Q_NULLPTR);
+    explicit QPrintDialog(QWidget *parent = Q_NULLPTR);
     ~QPrintDialog();
 
     int exec() Q_DECL_OVERRIDE;