diff --git a/src/corelib/kernel/qproperty.cpp b/src/corelib/kernel/qproperty.cpp
index b6513a0b71d..9b1a8b56aab 100644
--- a/src/corelib/kernel/qproperty.cpp
+++ b/src/corelib/kernel/qproperty.cpp
@@ -678,8 +678,10 @@ QPropertyObserver::QPropertyObserver(ChangeHandler changeHandler)
 #if QT_DEPRECATED_SINCE(6, 6)
 QPropertyObserver::QPropertyObserver(QUntypedPropertyData *data)
 {
+    QT_WARNING_PUSH QT_WARNING_DISABLE_DEPRECATED
     aliasData = data;
     next.setTag(ObserverIsAlias);
+    QT_WARNING_POP
 }
 #endif
 
diff --git a/src/corelib/kernel/qproperty.h b/src/corelib/kernel/qproperty.h
index 070907c6080..32d7a445067 100644
--- a/src/corelib/kernel/qproperty.h
+++ b/src/corelib/kernel/qproperty.h
@@ -229,7 +229,7 @@ public:
         ObserverNotifiesChangeHandler, // observer is a change handler, which runs on every change
         ObserverIsPlaceholder,  // the observer before this one is currently evaluated in QPropertyObserver::notifyObservers.
 #if QT_DEPRECATED_SINCE(6, 6)
-        ObserverIsAlias
+        ObserverIsAlias QT_DEPRECATED_VERSION_X_6_6("Use QProperty and add a binding to the target.")
 #endif
     };
 protected:
@@ -271,7 +271,8 @@ public:
 protected:
     QPropertyObserver(ChangeHandler changeHandler);
 #if QT_DEPRECATED_SINCE(6, 6)
-    QT_DEPRECATED QPropertyObserver(QUntypedPropertyData *aliasedPropertyPtr);
+    QT_DEPRECATED_VERSION_X_6_6("This constructor was only meant for internal use. Use QProperty and add a binding to the target.")
+    QPropertyObserver(QUntypedPropertyData *aliasedPropertyPtr);
 #endif
 
     QUntypedPropertyData *aliasedProperty() const
@@ -889,7 +890,7 @@ public:
 
 #if QT_DEPRECATED_SINCE(6, 6)
 template<typename T>
-class QT_DEPRECATED_X("Class was only meant for internal use, use a QProperty and add a binding to the target")
+class QT_DEPRECATED_VERSION_X_6_6("Class was only meant for internal use, use a QProperty and add a binding to the target")
 QPropertyAlias : public QPropertyObserver
 {
     Q_DISABLE_COPY_MOVE(QPropertyAlias)
@@ -1014,7 +1015,7 @@ public:
     }
     QT_WARNING_POP
 };
-#endif
+#endif // QT_DEPRECATED_SINCE(6, 6)
 
 template<typename Class, typename T, auto Offset, auto Signal = nullptr>
 class QObjectBindableProperty : public QPropertyData<T>
diff --git a/src/corelib/kernel/qproperty_p.h b/src/corelib/kernel/qproperty_p.h
index 277767b3c07..a263fe37307 100644
--- a/src/corelib/kernel/qproperty_p.h
+++ b/src/corelib/kernel/qproperty_p.h
@@ -126,15 +126,19 @@ struct QPropertyObserverPointer
     {
         unlink_common();
 #if QT_DEPRECATED_SINCE(6, 6)
+        QT_WARNING_PUSH QT_WARNING_DISABLE_DEPRECATED
         if (ptr->next.tag() == QPropertyObserver::ObserverIsAlias)
             ptr->aliasData = nullptr;
+        QT_WARNING_POP
 #endif
     }
 
     void unlink_fast()
     {
 #if QT_DEPRECATED_SINCE(6, 6)
+        QT_WARNING_PUSH QT_WARNING_DISABLE_DEPRECATED
         Q_ASSERT(ptr->next.tag() != QPropertyObserver::ObserverIsAlias);
+        QT_WARNING_POP
 #endif
         unlink_common();
     }
@@ -884,8 +888,10 @@ inline void QPropertyObserverPointer::notify(QUntypedPropertyData *propertyDataP
             // recursion is already properly handled somewhere else
             break;
 #if QT_DEPRECATED_SINCE(6, 6)
+        QT_WARNING_PUSH QT_WARNING_DISABLE_DEPRECATED
         case QPropertyObserver::ObserverIsAlias:
             break;
+        QT_WARNING_POP
 #endif
         default: Q_UNREACHABLE();
         }