diff --git a/skins/fluent2/QskFluent2SkinFactory.cpp b/skins/fluent2/QskFluent2SkinFactory.cpp
index a98afd83..a7127ba8 100644
--- a/skins/fluent2/QskFluent2SkinFactory.cpp
+++ b/skins/fluent2/QskFluent2SkinFactory.cpp
@@ -28,12 +28,12 @@ QskSkin* QskFluent2SkinFactory::createSkin( const QString& skinName )
 {
     if ( QString::compare( skinName, fluent2LightSkinName, Qt::CaseInsensitive ) == 0 )
     {
-        QskFluent2Theme theme( QskSkin::Light );
+        QskFluent2Theme theme( QskSkin::LightScheme );
         return new QskFluent2Skin( theme );
     }
     else if ( QString::compare( skinName, fluent2DarkSkinName, Qt::CaseInsensitive ) == 0 )
     {
-        QskFluent2Theme theme( QskSkin::Dark );
+        QskFluent2Theme theme( QskSkin::DarkScheme );
         return new QskFluent2Skin( theme );
     }
 
diff --git a/skins/fluent2/QskFluent2Theme.cpp b/skins/fluent2/QskFluent2Theme.cpp
index 10ae8ed2..dcd48867 100644
--- a/skins/fluent2/QskFluent2Theme.cpp
+++ b/skins/fluent2/QskFluent2Theme.cpp
@@ -31,7 +31,7 @@ QskFluent2Theme::QskFluent2Theme( QskSkin::ColorScheme colorScheme )
 QskFluent2Theme::QskFluent2Theme( QskSkin::ColorScheme colorScheme,
     const std::array< QRgb, NumAccentColors >& accentColors )
 {
-    if( colorScheme == QskSkin::Light )
+    if( colorScheme == QskSkin::LightScheme )
     {
         // Fill color:
 
@@ -133,7 +133,7 @@ QskFluent2Theme::QskFluent2Theme( QskSkin::ColorScheme colorScheme,
         // ### should actually be drawn twice with different values:
         shadow.dialog = { QskShadowMetrics( 0, 21, QPointF( 0, 2 ) ), rgbGray( 0, 0.1474 ) };
     }
-    else if( colorScheme == QskSkin::Dark )
+    else if( colorScheme == QskSkin::DarkScheme )
     {
         // Fill color:
 
diff --git a/skins/material3/QskMaterial3Skin.cpp b/skins/material3/QskMaterial3Skin.cpp
index 8f456dcf..21665588 100644
--- a/skins/material3/QskMaterial3Skin.cpp
+++ b/skins/material3/QskMaterial3Skin.cpp
@@ -54,7 +54,6 @@
 
 #include <QGuiApplication>
 #include <QScreen>
-#include <QStyleHints>
 
 static const int qskDuration = 150;
 
@@ -1210,7 +1209,7 @@ QskMaterial3Theme::QskMaterial3Theme( QskSkin::ColorScheme colorScheme,
         std::array< QskHctColor, NumPaletteTypes > palettes )
     : m_palettes( palettes )
 {
-    if ( colorScheme == QskSkin::Light )
+    if ( colorScheme == QskSkin::LightScheme )
     {
         primary = m_palettes[ Primary ].toned( 40 ).rgb();
         onPrimary = m_palettes[ Primary ].toned( 100 ).rgb();
@@ -1244,7 +1243,7 @@ QskMaterial3Theme::QskMaterial3Theme( QskSkin::ColorScheme colorScheme,
 
         shadow = m_palettes[ Neutral ].toned( 0 ).rgb();
     }
-    else if ( colorScheme == QskSkin::Dark )
+    else if ( colorScheme == QskSkin::DarkScheme )
     {
         primary = m_palettes[ Primary ].toned( 80 ).rgb();
         onPrimary = m_palettes[ Primary ].toned( 20 ).rgb();
diff --git a/skins/material3/QskMaterial3SkinFactory.cpp b/skins/material3/QskMaterial3SkinFactory.cpp
index f65f669c..541db64d 100644
--- a/skins/material3/QskMaterial3SkinFactory.cpp
+++ b/skins/material3/QskMaterial3SkinFactory.cpp
@@ -27,12 +27,12 @@ QskSkin* QskMaterial3SkinFactory::createSkin( const QString& skinName )
 {
     if ( QString::compare( skinName, materialLightSkinName, Qt::CaseInsensitive ) == 0 )
     {
-        QskMaterial3Theme theme( QskSkin::Light );
+        QskMaterial3Theme theme( QskSkin::LightScheme );
         return new QskMaterial3Skin( theme );
     }
     else if ( QString::compare( skinName, materialDarkSkinName, Qt::CaseInsensitive ) == 0 )
     {
-        QskMaterial3Theme theme( QskSkin::Dark );
+        QskMaterial3Theme theme( QskSkin::DarkScheme );
         return new QskMaterial3Skin( theme );
     }
 
diff --git a/src/controls/QskSkin.h b/src/controls/QskSkin.h
index b02facbb..ba6a6206 100644
--- a/src/controls/QskSkin.h
+++ b/src/controls/QskSkin.h
@@ -50,10 +50,12 @@ class QSK_EXPORT QskSkin : public QObject
     // Use Qt::ColorScheme once minimum version is Qt 6.5
     enum ColorScheme
     {
-        Unknown,
-        Light,
-        Dark
+        UnknownScheme,
+
+        LightScheme,
+        DarkScheme
     };
+    Q_ENUM( ColorScheme )
 #endif
 
     QskSkin( QObject* parent = nullptr );
diff --git a/src/controls/QskSkinManager.cpp b/src/controls/QskSkinManager.cpp
index 45725cd3..3013a8bb 100644
--- a/src/controls/QskSkinManager.cpp
+++ b/src/controls/QskSkinManager.cpp
@@ -8,14 +8,17 @@
 
 #include <qdir.h>
 #include <qglobalstatic.h>
-#include <qguiapplication.h>
 #include <qjsonarray.h>
 #include <qjsonobject.h>
 #include <qmap.h>
 #include <qpluginloader.h>
 #include <qpointer.h>
 #include <qset.h>
+
+#if QT_VERSION >= QT_VERSION_CHECK( 6, 5, 0 )
+#include <qguiapplication.h>
 #include <qstylehints.h>
+#endif
 
 static inline QStringList qskSplitPath( const QString& s )
 {