diff --git a/src/common/QskNamespace.h b/src/common/QskNamespace.h
index 35c2769b..73f33939 100644
--- a/src/common/QskNamespace.h
+++ b/src/common/QskNamespace.h
@@ -9,28 +9,36 @@
 #include "QskGlobal.h"
 #include <qmetaobject.h>
 
-/*
-    hack to run moc over a namespace, what is not
-    yet supported with Qt 5.6
- */
+#if QT_VERSION < QT_VERSION_CHECK( 5, 8, 0 )
+    // hack to run moc over a namespace
 
-#ifdef Q_MOC_RUN
+    #ifdef Q_MOC_RUN
 
-#define QSK_NAMESPACE( name ) struct name
-#define QSK_ENUM( name ) Q_GADGET Q_ENUM( name )
+        #define QSK_NAMESPACE( name ) struct name
+        #define QSK_ENUM( name ) Q_GADGET Q_ENUM( name )
+
+    #else
+
+        #define QSK_NAMESPACE( name ) namespace name
+        #define QSK_ENUM( name ) \
+            inline constexpr const QMetaObject* qt_getEnumMetaObject(name) noexcept { return &staticMetaObject; } \
+            inline constexpr const char* qt_getEnumName(name) noexcept { return #name; }
+
+    #endif
+
+    #define QSK_Q_NAMESPACE extern const QMetaObject staticMetaObject;
 
 #else
 
-#define QSK_NAMESPACE( name ) namespace name
-#define QSK_ENUM( name ) \
-    inline constexpr const QMetaObject* qt_getEnumMetaObject(name) noexcept { return &staticMetaObject; } \
-    inline constexpr const char* qt_getEnumName(name) noexcept { return #name; }
+    #define QSK_NAMESPACE( name ) namespace name
+    #define QSK_ENUM Q_ENUM_NS
 
+    #define QSK_Q_NAMESPACE Q_NAMESPACE
 #endif
 
 QSK_NAMESPACE( Qsk )
 {
-    extern QSK_EXPORT const QMetaObject staticMetaObject;
+    QSK_EXPORT QSK_Q_NAMESPACE
 
     enum Direction
     {
@@ -62,5 +70,6 @@ QSK_NAMESPACE( Qsk )
 
 #undef QSK_NAMESPACE
 #undef QSK_ENUM
+#undef QSK_Q_NAMESPACE
 
 #endif
diff --git a/src/controls/QskQuickItem.cpp b/src/controls/QskQuickItem.cpp
index 746b51ce..f6526d8e 100644
--- a/src/controls/QskQuickItem.cpp
+++ b/src/controls/QskQuickItem.cpp
@@ -256,8 +256,13 @@ void QskQuickItem::setGeometry( qreal x, qreal y, qreal width, qreal height )
 
     Q_D( QQuickItem );
 
+#if QT_VERSION >= QT_VERSION_CHECK( 6, 2, 0 )
+    d->heightValidFlag = true;
+    d->widthValidFlag = true;
+#else
     d->heightValid = true;
     d->widthValid = true;
+#endif
 
     const QRectF oldRect( d->x, d->y, d->width, d->height );
 
@@ -541,7 +546,11 @@ void QskQuickItem::applyUpdateFlag( UpdateFlag flag, bool on )
                 // Update the implicitSize and rebind the size to it.
                 // Having set the size explicitly gets lost.
 
+#if QT_VERSION >= QT_VERSION_CHECK( 6, 2, 0 )
+                d->widthValidFlag = d->heightValidFlag = false;
+#else
                 d->widthValid = d->heightValid = false;
+#endif
                 d->updateImplicitSize( false );
             }
 
diff --git a/src/controls/QskQuickItemPrivate.cpp b/src/controls/QskQuickItemPrivate.cpp
index f17f6dfd..fcad0f3b 100644
--- a/src/controls/QskQuickItemPrivate.cpp
+++ b/src/controls/QskQuickItemPrivate.cpp
@@ -38,7 +38,11 @@ QskQuickItemPrivate::QskQuickItemPrivate()
             but to make it working: the DeferredLayout flag needs to be disabled.
          */
 
+#if QT_VERSION >= QT_VERSION_CHECK( 6, 2, 0 )
+        widthValidFlag = heightValidFlag = true;
+#else
         widthValid = heightValid = true;
+#endif
     }
 }
 
@@ -130,6 +134,11 @@ void QskQuickItemPrivate::setImplicitSize( qreal w, qreal h, bool doNotify )
     implicitWidth = w;
     implicitHeight = h;
 
+#if QT_VERSION >= QT_VERSION_CHECK( 6, 2, 0 )
+    const bool widthValid = widthValidFlag;
+    const bool heightValid = heightValidFlag;
+#endif
+
     if ( !( widthValid && heightValid ) )
     {
         // auto adjusting the size
diff --git a/src/controls/QskVariantAnimator.cpp b/src/controls/QskVariantAnimator.cpp
index 0af96cd7..f22b29de 100644
--- a/src/controls/QskVariantAnimator.cpp
+++ b/src/controls/QskVariantAnimator.cpp
@@ -19,6 +19,13 @@
 #include <qvariantanimation.h>
 
 QSK_QT_PRIVATE_BEGIN
+#if QT_VERSION >= QT_VERSION_CHECK( 6, 2, 0 )
+    #ifndef emit
+        // qvariantanimation_p.h needs it
+        #define emit
+    #endif
+#endif
+
 #include <private/qvariantanimation_p.h>
 QSK_QT_PRIVATE_END
 
diff --git a/src/nodes/QskRichTextRenderer.cpp b/src/nodes/QskRichTextRenderer.cpp
index 76568ed3..d9ef8f10 100644
--- a/src/nodes/QskRichTextRenderer.cpp
+++ b/src/nodes/QskRichTextRenderer.cpp
@@ -58,8 +58,13 @@ namespace
         {
             auto d = QQuickTextPrivate::get( this );
 
+#if QT_VERSION >= QT_VERSION_CHECK( 6, 2, 0 )
+            d->heightValidFlag = true;
+            d->widthValidFlag = true;
+#else
             d->heightValid = true;
             d->widthValid = true;
+#endif
 
             if ( ( d->x != rect.x() ) || ( d->y != rect.y() ) )
             {