diff --git a/kwin/client.h b/kwin/client.h
index 762af7fb..11b1fdc7 100644
--- a/kwin/client.h
+++ b/kwin/client.h
@@ -140,7 +140,7 @@ class Client
      * Whether the Client provides context help. Mostly needed by decorations to decide whether to
      * show the help button or not.
      **/
-    Q_PROPERTY(bool providesContextHelp READ providesContextHelp CONSTANT)
+    Q_PROPERTY(bool providesContextHelp READ providesContextHelp)
     /**
      * Whether the Client can be resized. The property is evaluated each time it is invoked.
      * Because of that there is no notify signal.
diff --git a/kwin/libkwineffects/kwineffects.h b/kwin/libkwineffects/kwineffects.h
index 9ec1f9e0..9240bf55 100644
--- a/kwin/libkwineffects/kwineffects.h
+++ b/kwin/libkwineffects/kwineffects.h
@@ -554,7 +554,7 @@ class KWIN_EXPORT EffectsHandler : public QObject
      */
     Q_PROPERTY(qreal animationTimeFactor READ animationTimeFactor)
     Q_PROPERTY(QList< KWin::EffectWindow* > stackingOrder READ stackingOrder)
-    Q_PROPERTY(CompositingType compositingType READ compositingType CONSTANT)
+    Q_PROPERTY(CompositingType compositingType READ compositingType)
     Q_PROPERTY(QPoint cursorPos READ cursorPos)
     friend class Effect;
 public:
@@ -1052,7 +1052,7 @@ protected:
 class KWIN_EXPORT EffectWindow : public QObject
 {
     Q_OBJECT
-    Q_PROPERTY(bool alpha READ hasAlpha CONSTANT)
+    Q_PROPERTY(bool alpha READ hasAlpha)
     Q_PROPERTY(QRect geometry READ geometry)
     Q_PROPERTY(QRect expandedGeometry READ expandedGeometry)
     Q_PROPERTY(int height READ height)
diff --git a/kwin/toplevel.h b/kwin/toplevel.h
index bd53cdd0..16f500dd 100644
--- a/kwin/toplevel.h
+++ b/kwin/toplevel.h
@@ -47,7 +47,7 @@ class Toplevel
     : public QObject, public KDecorationDefines
 {
     Q_OBJECT
-    Q_PROPERTY(bool alpha READ hasAlpha CONSTANT)
+    Q_PROPERTY(bool alpha READ hasAlpha)
     Q_PROPERTY(qulonglong frameId READ frameId)
     Q_PROPERTY(QRect geometry READ geometry NOTIFY geometryChanged)
     Q_PROPERTY(QRect visibleRect READ visibleRect)
@@ -57,7 +57,7 @@ class Toplevel
     Q_PROPERTY(int screen READ screen NOTIFY screenChanged)
     Q_PROPERTY(QSize size READ size)
     Q_PROPERTY(int width READ width)
-    Q_PROPERTY(qulonglong windowId READ window CONSTANT)
+    Q_PROPERTY(qulonglong windowId READ window)
     Q_PROPERTY(int x READ x)
     Q_PROPERTY(int y READ y)
     Q_PROPERTY(int desktop READ desktop)
@@ -153,11 +153,11 @@ class Toplevel
      * Whether this Toplevel is managed by KWin (it has control over its placement and other
      * aspects, as opposed to override-redirect windows that are entirely handled by the application).
      **/
-    Q_PROPERTY(bool managed READ isClient CONSTANT)
+    Q_PROPERTY(bool managed READ isClient)
     /**
      * Whether this Toplevel represents an already deleted window and only kept for the compositor for animations.
      **/
-    Q_PROPERTY(bool deleted READ isDeleted CONSTANT)
+    Q_PROPERTY(bool deleted READ isDeleted)
     /**
      * Whether the window has an own shape
      **/