3 files changed, 3 insertions, 3 deletions
diff --git a/examples/widgets/widgets/calculator/button.h b/examples/widgets/widgets/calculator/button.h
index 50874ea574..d84d7e92e8 100644
--- a/examples/widgets/widgets/calculator/button.h
+++ b/examples/widgets/widgets/calculator/button.h
@@ -49,7 +49,7 @@ class Button : public QToolButton
     Q_OBJECT
 
 public:
-    Button(const QString &text, QWidget *parent = 0);
+    explicit Button(const QString &text, QWidget *parent = 0);
 
     QSize sizeHint() const;
 };
diff --git a/examples/widgets/widgets/elidedlabel/elidedlabel.h b/examples/widgets/widgets/elidedlabel/elidedlabel.h
index 2c19589bc2..118c8c2741 100644
--- a/examples/widgets/widgets/elidedlabel/elidedlabel.h
+++ b/examples/widgets/widgets/elidedlabel/elidedlabel.h
@@ -55,7 +55,7 @@ class ElidedLabel : public QFrame
     Q_PROPERTY(bool isElided READ isElided)
 
 public:
-    ElidedLabel(const QString &text, QWidget *parent = 0);
+    explicit ElidedLabel(const QString &text, QWidget *parent = 0);
 
     void setText(const QString &text);
     const QString & text() const { return content; }
diff --git a/examples/widgets/widgets/wiggly/dialog.h b/examples/widgets/widgets/wiggly/dialog.h
index 84167d9153..e6117f8ee2 100644
--- a/examples/widgets/widgets/wiggly/dialog.h
+++ b/examples/widgets/widgets/wiggly/dialog.h
@@ -49,7 +49,7 @@ class Dialog : public QDialog
     Q_OBJECT
 
 public:
-    Dialog(QWidget *parent = 0, bool smallScreen = false);
+    explicit Dialog(QWidget *parent = 0, bool smallScreen = false);
 };
 //! [0]