diff --git a/src/dlangui/widgets/controls.d b/src/dlangui/widgets/controls.d
index 68e61ce8..3f9642d7 100644
--- a/src/dlangui/widgets/controls.d
+++ b/src/dlangui/widgets/controls.d
@@ -362,7 +362,7 @@ class ImageTextButton : HorizontalLayout {
     override @property Widget text(UIString s) { _label.text = s; requestLayout(); return this; }
     
     /// Returns orientation: Vertical - image top, Horizontal - image left"
-    override @property Orientation orientation() {
+    override @property Orientation orientation() const {
         return super.orientation();
     }
 
diff --git a/src/dlangui/widgets/layouts.d b/src/dlangui/widgets/layouts.d
index 57c906a2..ee29b698 100644
--- a/src/dlangui/widgets/layouts.d
+++ b/src/dlangui/widgets/layouts.d
@@ -521,7 +521,7 @@ class ResizerWidget : Widget {
 class LinearLayout : WidgetGroupDefaultDrawing {
     protected Orientation _orientation = Orientation.Vertical;
     /// returns linear layout orientation (Vertical, Horizontal)
-    @property Orientation orientation() { return _orientation; }
+    @property Orientation orientation() const { return _orientation; }
     /// sets linear layout orientation
     @property LinearLayout orientation(Orientation value) { _orientation = value; requestLayout(); return this; }