diff --git a/src/widgets/kernel/qwidget.cpp b/src/widgets/kernel/qwidget.cpp
index 7eecd3d84d6..f79eaf197d9 100644
--- a/src/widgets/kernel/qwidget.cpp
+++ b/src/widgets/kernel/qwidget.cpp
@@ -8525,6 +8525,8 @@ void QWidget::mouseReleaseEvent(QMouseEvent *event)
     This event handler, for event \a event, can be reimplemented in a
     subclass to receive mouse double click events for the widget.
 
+    The default implementation calls mousePressEvent().
+
     \note The widget will also receive mouse press and mouse release
     events in addition to the double click event. It is up to the
     developer to ensure that the application interprets these events
@@ -8536,7 +8538,7 @@ void QWidget::mouseReleaseEvent(QMouseEvent *event)
 
 void QWidget::mouseDoubleClickEvent(QMouseEvent *event)
 {
-    event->ignore();
+    mousePressEvent(event);
 }
 
 #ifndef QT_NO_WHEELEVENT
diff --git a/tests/auto/widgets/widgets/qtabbar/tst_qtabbar.cpp b/tests/auto/widgets/widgets/qtabbar/tst_qtabbar.cpp
index 345b8d82ada..06dd6233689 100644
--- a/tests/auto/widgets/widgets/qtabbar/tst_qtabbar.cpp
+++ b/tests/auto/widgets/widgets/qtabbar/tst_qtabbar.cpp
@@ -679,7 +679,8 @@ void tst_QTabBar::tabBarClicked()
         QCOMPARE(doubleClickSpy.count(), 0);
 
         QTest::mouseDClick(&tabBar, button, 0, tabPos);
-        QCOMPARE(clickSpy.count(), 0);
+        QCOMPARE(clickSpy.count(), 1);
+        QCOMPARE(clickSpy.takeFirst().takeFirst().toInt(), 0);
         QCOMPARE(doubleClickSpy.count(), 1);
         QCOMPARE(doubleClickSpy.takeFirst().takeFirst().toInt(), 0);
 
@@ -691,7 +692,8 @@ void tst_QTabBar::tabBarClicked()
         QCOMPARE(doubleClickSpy.count(), 0);
 
         QTest::mouseDClick(&tabBar, button, 0, barPos);
-        QCOMPARE(clickSpy.count(), 0);
+        QCOMPARE(clickSpy.count(), 1);
+        QCOMPARE(clickSpy.takeFirst().takeFirst().toInt(), -1);
         QCOMPARE(doubleClickSpy.count(), 1);
         QCOMPARE(doubleClickSpy.takeFirst().takeFirst().toInt(), -1);
 
diff --git a/tests/auto/widgets/widgets/qtabwidget/tst_qtabwidget.cpp b/tests/auto/widgets/widgets/qtabwidget/tst_qtabwidget.cpp
index df11ea9b14a..90af617e877 100644
--- a/tests/auto/widgets/widgets/qtabwidget/tst_qtabwidget.cpp
+++ b/tests/auto/widgets/widgets/qtabwidget/tst_qtabwidget.cpp
@@ -690,7 +690,8 @@ void tst_QTabWidget::tabBarClicked()
         QCOMPARE(doubleClickSpy.count(), 0);
 
         QTest::mouseDClick(&tabBar, button, 0, tabPos);
-        QCOMPARE(clickSpy.count(), 0);
+        QCOMPARE(clickSpy.count(), 1);
+        QCOMPARE(clickSpy.takeFirst().takeFirst().toInt(), 0);
         QCOMPARE(doubleClickSpy.count(), 1);
         QCOMPARE(doubleClickSpy.takeFirst().takeFirst().toInt(), 0);
 
@@ -702,7 +703,8 @@ void tst_QTabWidget::tabBarClicked()
         QCOMPARE(doubleClickSpy.count(), 0);
 
         QTest::mouseDClick(&tabBar, button, 0, barPos);
-        QCOMPARE(clickSpy.count(), 0);
+        QCOMPARE(clickSpy.count(), 1);
+        QCOMPARE(clickSpy.takeFirst().takeFirst().toInt(), -1);
         QCOMPARE(doubleClickSpy.count(), 1);
         QCOMPARE(doubleClickSpy.takeFirst().takeFirst().toInt(), -1);