diff --git a/src/object_gui.cpp b/src/object_gui.cpp
--- a/src/object_gui.cpp
+++ b/src/object_gui.cpp
@@ -333,7 +333,7 @@ public:
 				 * look nice in all layouts, we use the 4x4 layout (smallest previews) as starting point. For the bigger
 				 * previews in the layouts with less views we add space homogeneously on all sides, so the 4x4 preview-rectangle
 				 * is centered in the 2x1, 1x2 resp. 1x1 buttons. */
-				const NWidgetMatrix *matrix = this->GetWidget<NWidgetMatrix>(WID_BO_OBJECT_MATRIX);
+				const NWidgetMatrix *matrix = this->GetWidget<NWidgetBase>(widget)->GetParentWidget<NWidgetMatrix>();
 				uint matrix_height = matrix->current_y;
 
 				DrawPixelInfo tmp_dpi;
@@ -354,7 +354,7 @@ public:
 
 			case WID_BO_SELECT_IMAGE: {
 				ObjectClass *objclass = ObjectClass::Get(_selected_object_class);
-				int obj_index = objclass->GetIndexFromUI(this->GetWidget<NWidgetMatrix>(WID_BO_SELECT_MATRIX)->GetCurrentElement());
+				int obj_index = objclass->GetIndexFromUI(this->GetWidget<NWidgetBase>(widget)->GetParentWidget<NWidgetMatrix>()->GetCurrentElement());
 				if (obj_index < 0) break;
 				const ObjectSpec *spec = objclass->GetSpec(obj_index);
 				if (spec == nullptr) break;
@@ -509,14 +509,14 @@ public:
 
 			case WID_BO_SELECT_IMAGE: {
 				ObjectClass *objclass = ObjectClass::Get(_selected_object_class);
-				int num_clicked = objclass->GetIndexFromUI(this->GetWidget<NWidgetMatrix>(WID_BO_SELECT_MATRIX)->GetCurrentElement());
+				int num_clicked = objclass->GetIndexFromUI(this->GetWidget<NWidgetBase>(widget)->GetParentWidget<NWidgetMatrix>()->GetCurrentElement());
 				if (num_clicked >= 0 && objclass->GetSpec(num_clicked)->IsAvailable()) this->SelectOtherObject(num_clicked);
 				break;
 			}
 
 			case WID_BO_OBJECT_SPRITE:
 				if (_selected_object_index != -1) {
-					_selected_object_view = this->GetWidget<NWidgetMatrix>(WID_BO_OBJECT_MATRIX)->GetCurrentElement();
+					_selected_object_view = this->GetWidget<NWidgetBase>(widget)->GetParentWidget<NWidgetMatrix>()->GetCurrentElement();
 					this->SelectOtherObject(_selected_object_index); // Re-select the object for a different view.
 				}
 				break;
diff --git a/src/rail_gui.cpp b/src/rail_gui.cpp
--- a/src/rail_gui.cpp
+++ b/src/rail_gui.cpp
@@ -1285,7 +1285,7 @@ public:
 			}
 
 			case WID_BRAS_IMAGE: {
-				uint16_t type = this->GetWidget<NWidgetMatrix>(WID_BRAS_MATRIX)->GetCurrentElement();
+				uint16_t type = this->GetWidget<NWidgetBase>(widget)->GetParentWidget<NWidgetMatrix>()->GetCurrentElement();
 				assert(type < _railstation.station_count);
 				/* Check station availability callback */
 				const StationSpec *statspec = StationClass::Get(_railstation.station_class)->GetSpec(type);
@@ -1470,7 +1470,7 @@ public:
 			}
 
 			case WID_BRAS_IMAGE: {
-				uint16_t y = this->GetWidget<NWidgetMatrix>(WID_BRAS_MATRIX)->GetCurrentElement();
+				uint16_t y = this->GetWidget<NWidgetBase>(widget)->GetParentWidget<NWidgetMatrix>()->GetCurrentElement();
 				if (y >= _railstation.station_count) return;
 
 				/* Check station availability callback */
@@ -1480,7 +1480,7 @@ public:
 				_railstation.station_type = y;
 
 				this->CheckSelectedSize(statspec);
-				this->GetWidget<NWidgetMatrix>(WID_BRAS_MATRIX)->SetClicked(_railstation.station_type);
+				this->GetWidget<NWidgetBase>(widget)->GetParentWidget<NWidgetMatrix>()->SetClicked(_railstation.station_type);
 
 				if (_settings_client.sound.click_beep) SndPlayFx(SND_15_BEEP);
 				this->SetDirty();
@@ -2097,7 +2097,7 @@ struct BuildRailWaypointWindow : PickerW
 	{
 		switch (widget) {
 			case WID_BRW_WAYPOINT: {
-				uint16_t type = this->list.at(this->GetWidget<NWidgetMatrix>(WID_BRW_WAYPOINT_MATRIX)->GetCurrentElement());
+				uint16_t type = this->list.at(this->GetWidget<NWidgetBase>(widget)->GetParentWidget<NWidgetMatrix>()->GetCurrentElement());
 				const StationSpec *statspec = this->waypoints->GetSpec(type);
 
 				DrawPixelInfo tmp_dpi;
@@ -2120,7 +2120,7 @@ struct BuildRailWaypointWindow : PickerW
 	{
 		switch (widget) {
 			case WID_BRW_WAYPOINT: {
-				uint16_t sel = this->GetWidget<NWidgetMatrix>(WID_BRW_WAYPOINT_MATRIX)->GetCurrentElement();
+				uint16_t sel = this->GetWidget<NWidgetBase>(widget)->GetParentWidget<NWidgetMatrix>()->GetCurrentElement();
 				assert(sel < this->list.size());
 				uint16_t type = this->list.at(sel);
 
@@ -2129,7 +2129,7 @@ struct BuildRailWaypointWindow : PickerW
 				if (!IsStationAvailable(statspec)) return;
 
 				_cur_waypoint_type = type;
-				this->GetWidget<NWidgetMatrix>(WID_BRW_WAYPOINT_MATRIX)->SetClicked(sel);
+				this->GetWidget<NWidgetBase>(widget)->GetParentWidget<NWidgetMatrix>()->SetClicked(sel);
 				if (_settings_client.sound.click_beep) SndPlayFx(SND_15_BEEP);
 				this->SetDirty();
 				break;
diff --git a/src/road_gui.cpp b/src/road_gui.cpp
--- a/src/road_gui.cpp
+++ b/src/road_gui.cpp
@@ -1451,7 +1451,7 @@ public:
 			}
 
 			case WID_BROS_IMAGE: {
-				uint16_t type = this->GetWidget<NWidgetMatrix>(WID_BROS_MATRIX)->GetCurrentElement();
+				uint16_t type = this->GetWidget<NWidgetBase>(widget)->GetParentWidget<NWidgetMatrix>()->GetCurrentElement();
 				assert(type < _roadstop_gui_settings.roadstop_count);
 
 				const RoadStopSpec *spec = RoadStopClass::Get(_roadstop_gui_settings.roadstop_class)->GetSpec(type);
@@ -1549,7 +1549,7 @@ public:
 			}
 
 			case WID_BROS_IMAGE: {
-				uint16_t y = this->GetWidget<NWidgetMatrix>(WID_BROS_MATRIX)->GetCurrentElement();
+				uint16_t y = this->GetWidget<NWidgetBase>(widget)->GetParentWidget<NWidgetMatrix>()->GetCurrentElement();
 				if (y >= _roadstop_gui_settings.roadstop_count) return;
 
 				const RoadStopSpec *spec = RoadStopClass::Get(_roadstop_gui_settings.roadstop_class)->GetSpec(y);
@@ -1559,7 +1559,7 @@ public:
 
 				_roadstop_gui_settings.roadstop_type = y;
 
-				this->GetWidget<NWidgetMatrix>(WID_BROS_MATRIX)->SetClicked(_roadstop_gui_settings.roadstop_type);
+				this->GetWidget<NWidgetBase>(widget)->GetParentWidget<NWidgetMatrix>()->SetClicked(_roadstop_gui_settings.roadstop_type);
 
 				if (_settings_client.sound.click_beep) SndPlayFx(SND_15_BEEP);
 				this->SetDirty();