diff --git a/src/corelib/kernel/qproperty.cpp b/src/corelib/kernel/qproperty.cpp
index a1b2f83c5bd..d8176a845a3 100644
--- a/src/corelib/kernel/qproperty.cpp
+++ b/src/corelib/kernel/qproperty.cpp
@@ -571,10 +571,9 @@ QPropertyObserver::QPropertyObserver(ChangeHandler changeHandler)
     d.setChangeHandler(changeHandler);
 }
 
-QPropertyObserver::QPropertyObserver(QUntypedPropertyData *aliasedPropertyPtr)
+QPropertyObserver::QPropertyObserver(QUntypedPropertyData *)
 {
-    QPropertyObserverPointer d{this};
-    d.setAliasedProperty(aliasedPropertyPtr);
+    // ### Qt 7: Remove, currently left for binary compatibility
 }
 
 /*! \internal
@@ -625,8 +624,6 @@ QPropertyObserver &QPropertyObserver::operator=(QPropertyObserver &&other) noexc
 
 void QPropertyObserverPointer::unlink()
 {
-    if (ptr->next.tag() == QPropertyObserver::ObserverNotifiesAlias)
-        ptr->aliasedPropertyData = nullptr;
     if (ptr->next)
         ptr->next->prev = ptr->prev;
     if (ptr->prev)
@@ -642,13 +639,6 @@ void QPropertyObserverPointer::setChangeHandler(QPropertyObserver::ChangeHandler
     ptr->next.setTag(QPropertyObserver::ObserverNotifiesChangeHandler);
 }
 
-void QPropertyObserverPointer::setAliasedProperty(QUntypedPropertyData *property)
-{
-    Q_ASSERT(ptr->next.tag() != QPropertyObserver::ObserverIsPlaceholder);
-    ptr->aliasedPropertyData = property;
-    ptr->next.setTag(QPropertyObserver::ObserverNotifiesAlias);
-}
-
 void QPropertyObserverPointer::setBindingToNotify(QPropertyBindingPrivate *binding)
 {
     Q_ASSERT(ptr->next.tag() != QPropertyObserver::ObserverIsPlaceholder);
@@ -708,9 +698,6 @@ void QPropertyObserverPointer::notify(QUntypedPropertyData *propertyDataPtr)
      */
     while (observer) {
         QPropertyObserver *next = observer->next.data();
-
-        char preventBug[1] = {'\0'}; // QTBUG-87245
-        Q_UNUSED(preventBug);
         switch (QPropertyObserver::ObserverTag(observer->next.tag())) {
         case QPropertyObserver::ObserverNotifiesChangeHandler:
         {
@@ -734,11 +721,10 @@ void QPropertyObserverPointer::notify(QUntypedPropertyData *propertyDataPtr)
             next = protector.next();
             break;
         }
-        case QPropertyObserver::ObserverNotifiesAlias:
-            break;
         case QPropertyObserver::ObserverIsPlaceholder:
             // recursion is already properly handled somewhere else
             break;
+        default: Q_UNREACHABLE();
         }
         observer = next;
     }
diff --git a/src/corelib/kernel/qproperty.h b/src/corelib/kernel/qproperty.h
index f5513be73f2..a2c2875a121 100644
--- a/src/corelib/kernel/qproperty.h
+++ b/src/corelib/kernel/qproperty.h
@@ -215,7 +215,6 @@ public:
     enum ObserverTag {
         ObserverNotifiesBinding, // observer was installed to notify bindings that obsverved property changed
         ObserverNotifiesChangeHandler, // observer is a change handler, which runs on every change
-        ObserverNotifiesAlias, // used for QPropertyAlias
         ObserverIsPlaceholder  // the observer before this one is currently evaluated in QPropertyObserver::notifyObservers.
     };
 protected:
@@ -237,7 +236,6 @@ private:
     union {
         QPropertyBindingPrivate *binding = nullptr;
         ChangeHandler changeHandler;
-        QUntypedPropertyData *aliasedPropertyData;
     };
 };
 
@@ -260,7 +258,7 @@ protected:
 
     QUntypedPropertyData *aliasedProperty() const
     {
-        return aliasedPropertyData;
+        return nullptr;
     }
 
 private:
diff --git a/src/corelib/kernel/qproperty_p.h b/src/corelib/kernel/qproperty_p.h
index d00094c54f3..32ff31166c2 100644
--- a/src/corelib/kernel/qproperty_p.h
+++ b/src/corelib/kernel/qproperty_p.h
@@ -105,7 +105,6 @@ struct QPropertyObserverPointer
 
     void setBindingToNotify(QPropertyBindingPrivate *binding);
     void setChangeHandler(QPropertyObserver::ChangeHandler changeHandler);
-    void setAliasedProperty(QUntypedPropertyData *propertyPtr);
 
     void notify(QUntypedPropertyData *propertyDataPtr);
 #ifndef QT_NO_DEBUG
diff --git a/tests/auto/corelib/kernel/qproperty/tst_qproperty.cpp b/tests/auto/corelib/kernel/qproperty/tst_qproperty.cpp
index b1f5a780a65..7a214acbc4f 100644
--- a/tests/auto/corelib/kernel/qproperty/tst_qproperty.cpp
+++ b/tests/auto/corelib/kernel/qproperty/tst_qproperty.cpp
@@ -83,7 +83,6 @@ private slots:
     void genericPropertyBindingBool();
     void setBindingFunctor();
     void multipleObservers();
-    void propertyAlias();
     void arrowAndStarOperator();
     void notifiedProperty();
     void typeNoOperatorEqual();
@@ -97,7 +96,6 @@ private slots:
     void qobjectObservers();
     void compatBindings();
     void metaProperty();
-    void aliasOnMetaProperty();
 
     void modifyObserverListWhileIterating();
     void compatPropertyNoDobuleNotification();
@@ -791,52 +789,6 @@ void tst_QProperty::multipleObservers()
     QCOMPARE(property.value(), 22);
 }
 
-void tst_QProperty::propertyAlias()
-{
-    QScopedPointer<QProperty<int>> property(new QProperty<int>);
-    property->setValue(5);
-    QPropertyAlias alias(property.get());
-    QVERIFY(alias.isValid());
-    QCOMPARE(alias.value(), 5);
-
-    int value1 = 1;
-    auto changeHandler = alias.onValueChanged([&]() { value1 = alias.value(); });
-    QCOMPARE(value1, 1);
-
-    int value2 = 2;
-    auto subscribeHandler = alias.subscribe([&]() { value2 = alias.value(); });
-    QCOMPARE(value2, 5);
-
-    alias.setValue(6);
-    QVERIFY(alias.isValid());
-    QCOMPARE(alias.value(), 6);
-    QCOMPARE(value1, 6);
-    QCOMPARE(value2, 6);
-
-    alias.setBinding([]() { return 12; });
-    QCOMPARE(value1, 12);
-    QCOMPARE(value2, 12);
-    QCOMPARE(alias.value(), 12);
-
-    alias.setValue(22);
-    QCOMPARE(value1, 22);
-    QCOMPARE(value2, 22);
-    QCOMPARE(alias.value(), 22);
-
-    property.reset();
-
-    QVERIFY(!alias.isValid());
-    QCOMPARE(alias.value(), int());
-    QCOMPARE(value1, 22);
-    QCOMPARE(value2, 22);
-
-    // Does not crash
-    alias.setValue(25);
-    QCOMPARE(alias.value(), int());
-    QCOMPARE(value1, 22);
-    QCOMPARE(value2, 22);
-}
-
 void tst_QProperty::arrowAndStarOperator()
 {
     QString str("Hello");
@@ -1445,42 +1397,6 @@ void tst_QProperty::metaProperty()
     QCOMPARE(object.fooData.value(), 1);
 }
 
-void tst_QProperty::aliasOnMetaProperty()
-{
-    MyQObject object;
-    QPropertyAlias<int> alias(object.bindableFoo());
-
-    QVERIFY(alias.isValid());
-    QCOMPARE(alias.value(), object.foo());
-    QVERIFY(!alias.hasBinding());
-
-    object.setFoo(42);
-    QCOMPARE(alias.value(), 42);
-
-    auto f = [&object]() -> int {
-        return object.barData;
-    };
-    object.bindableFoo().setBinding(f);
-    QVERIFY(alias.hasBinding());
-    QCOMPARE(alias.value(), object.bar());
-
-    object.setBar(111);
-    QCOMPARE(alias.value(), 111);
-
-    int changedCount = 0;
-    auto observer = alias.onValueChanged([&changedCount]() { ++changedCount; });
-    QCOMPARE(changedCount, 0);
-    object.setBar(666);
-    QCOMPARE(changedCount, 1);
-
-    alias.setBinding([&object]() { return object.read(); });
-    QCOMPARE(changedCount, 2);
-    QCOMPARE(alias.value(), 0);
-    object.readData = 100;
-    QCOMPARE(changedCount, 3);
-    QCOMPARE(alias.value(), 100);
-}
-
 void tst_QProperty::modifyObserverListWhileIterating()
 {
         struct DestructingObserver : QPropertyObserver {