diff --git a/src/widgets/widgets/qabstractslider.cpp b/src/widgets/widgets/qabstractslider.cpp
index 4e65fbac886..d2569c9934d 100644
--- a/src/widgets/widgets/qabstractslider.cpp
+++ b/src/widgets/widgets/qabstractslider.cpp
@@ -272,6 +272,7 @@ void QAbstractSlider::setOrientation(Qt::Orientation orientation)
         setSizePolicy(sizePolicy().transposed());
         setAttribute(Qt::WA_WState_OwnSizePolicy, false);
     }
+    sliderChange(SliderOrientationChange);
     update();
     updateGeometry();
 }
diff --git a/tests/auto/widgets/widgets/qabstractslider/tst_qabstractslider.cpp b/tests/auto/widgets/widgets/qabstractslider/tst_qabstractslider.cpp
index 04b1114c3d7..d0ab97b0afe 100644
--- a/tests/auto/widgets/widgets/qabstractslider/tst_qabstractslider.cpp
+++ b/tests/auto/widgets/widgets/qabstractslider/tst_qabstractslider.cpp
@@ -2139,12 +2139,8 @@ void tst_QAbstractSlider::sliderChange_impl()
 
     sl.setOrientation(sl.orientation() == Qt::Horizontal ? Qt::Vertical
                       /* else */                         : Qt::Horizontal);
-    QEXPECT_FAIL("", "QTBUG-135597", Continue);
     QCOMPARE(sl.changes.size(), 1U);
-    if (!sl.changes.empty()) {
-    QEXPECT_FAIL("", "QTBUG-135597", Continue);
     QCOMPARE(sl.changes.back(), SliderChange::SliderOrientationChange);
-    }
     sl.changes.clear();
 
     sl.setPageStep(1025); // unlikely to be the default ;)