1 files changed, 1 insertions, 1 deletions
diff --git a/src/widgets/widgets/qdockarealayout_p.h b/src/widgets/widgets/qdockarealayout_p.h
index 49bd157179..ab9c0c476c 100644
--- a/src/widgets/widgets/qdockarealayout_p.h
+++ b/src/widgets/widgets/qdockarealayout_p.h
@@ -89,7 +89,7 @@ struct QDockAreaLayoutItem
 {
     enum ItemFlags { NoFlags = 0, GapItem = 1, KeepSize = 2 };
 
-    explicit QDockAreaLayoutItem(QLayoutItem *_widgetItem = 0);
+    explicit QDockAreaLayoutItem(QLayoutItem *_widgetItem = nullptr);
     explicit QDockAreaLayoutItem(QDockAreaLayoutInfo *_subinfo);
     explicit QDockAreaLayoutItem(QPlaceHolderItem *_placeHolderItem);
     QDockAreaLayoutItem(const QDockAreaLayoutItem &other);