diff --git a/src/widgets/itemviews/qabstractitemview.cpp b/src/widgets/itemviews/qabstractitemview.cpp
index 37dcede6e3..6f92fd63d3 100644
--- a/src/widgets/itemviews/qabstractitemview.cpp
+++ b/src/widgets/itemviews/qabstractitemview.cpp
@@ -1538,6 +1538,7 @@ void QAbstractItemView::setIconSize(const QSize &size)
         return;
     d->iconSize = size;
     d->doDelayedItemsLayout();
+    emit iconSizeChanged(size);
 }
 
 QSize QAbstractItemView::iconSize() const
diff --git a/src/widgets/itemviews/qabstractitemview.h b/src/widgets/itemviews/qabstractitemview.h
index 4f9cd7b1c6..6bfe9a5f24 100644
--- a/src/widgets/itemviews/qabstractitemview.h
+++ b/src/widgets/itemviews/qabstractitemview.h
@@ -76,7 +76,7 @@ class Q_WIDGETS_EXPORT QAbstractItemView : public QAbstractScrollArea
     Q_PROPERTY(bool alternatingRowColors READ alternatingRowColors WRITE setAlternatingRowColors)
     Q_PROPERTY(SelectionMode selectionMode READ selectionMode WRITE setSelectionMode)
     Q_PROPERTY(SelectionBehavior selectionBehavior READ selectionBehavior WRITE setSelectionBehavior)
-    Q_PROPERTY(QSize iconSize READ iconSize WRITE setIconSize)
+    Q_PROPERTY(QSize iconSize READ iconSize WRITE setIconSize NOTIFY iconSizeChanged)
     Q_PROPERTY(Qt::TextElideMode textElideMode READ textElideMode WRITE setTextElideMode)
     Q_PROPERTY(ScrollMode verticalScrollMode READ verticalScrollMode WRITE setVerticalScrollMode)
     Q_PROPERTY(ScrollMode horizontalScrollMode READ horizontalScrollMode WRITE setHorizontalScrollMode)
@@ -263,6 +263,8 @@ Q_SIGNALS:
     void entered(const QModelIndex &index);
     void viewportEntered();
 
+    void iconSizeChanged(const QSize &size);
+
 protected:
     QAbstractItemView(QAbstractItemViewPrivate &, QWidget *parent = 0);
 
diff --git a/tests/auto/widgets/itemviews/qabstractitemview/tst_qabstractitemview.cpp b/tests/auto/widgets/itemviews/qabstractitemview/tst_qabstractitemview.cpp
index 237d4f8a29..1be597cb7c 100644
--- a/tests/auto/widgets/itemviews/qabstractitemview/tst_qabstractitemview.cpp
+++ b/tests/auto/widgets/itemviews/qabstractitemview/tst_qabstractitemview.cpp
@@ -526,11 +526,16 @@ void tst_QAbstractItemView::basic_tests(TestView *view)
     // setIconSize
     view->setIconSize(QSize(16, 16));
     QCOMPARE(view->iconSize(), QSize(16, 16));
+    QSignalSpy spy(view, &QAbstractItemView::iconSizeChanged);
+    QVERIFY(spy.isValid());
     view->setIconSize(QSize(32, 32));
     QCOMPARE(view->iconSize(), QSize(32, 32));
+    QCOMPARE(spy.count(), 1);
+    QCOMPARE(spy.at(0).at(0).value<QSize>(), QSize(32, 32));
     // Should this happen?
     view->setIconSize(QSize(-1, -1));
     QCOMPARE(view->iconSize(), QSize(-1, -1));
+    QCOMPARE(spy.count(), 2);
 
     QCOMPARE(view->currentIndex(), QModelIndex());
     QCOMPARE(view->rootIndex(), QModelIndex());