diff --git a/src/group_gui.cpp b/src/group_gui.cpp
--- a/src/group_gui.cpp
+++ b/src/group_gui.cpp
@@ -69,7 +69,7 @@ static const NWidgetPart _nested_group_w
 			NWidget(WWT_PANEL, COLOUR_GREY, GRP_WIDGET_DEFAULT_VEHICLES), SetMinimalSize(200, 13), SetFill(1, 0), EndContainer(),
 			NWidget(NWID_HORIZONTAL),
 				NWidget(WWT_MATRIX, COLOUR_GREY, GRP_WIDGET_LIST_GROUP), SetMinimalSize(188, 0), SetDataTip(0x701, STR_GROUPS_CLICK_ON_GROUP_FOR_TOOLTIP),
-						SetFill(1, 0), SetResize(0, 1),
+						SetFill(1, 0), SetResize(0, 1), SetScrollbar(GRP_WIDGET_LIST_GROUP_SCROLLBAR),
 				NWidget(WWT_SCROLL2BAR, COLOUR_GREY, GRP_WIDGET_LIST_GROUP_SCROLLBAR),
 			EndContainer(),
 			NWidget(NWID_HORIZONTAL),
@@ -93,7 +93,7 @@ static const NWidgetPart _nested_group_w
 				NWidget(WWT_PANEL, COLOUR_GREY), SetMinimalSize(12, 12), SetResize(1, 0), EndContainer(),
 			EndContainer(),
 			NWidget(NWID_HORIZONTAL),
-				NWidget(WWT_MATRIX, COLOUR_GREY, GRP_WIDGET_LIST_VEHICLE), SetMinimalSize(248, 0), SetDataTip(0x701, STR_NULL), SetResize(1, 1), SetFill(1, 0),
+				NWidget(WWT_MATRIX, COLOUR_GREY, GRP_WIDGET_LIST_VEHICLE), SetMinimalSize(248, 0), SetDataTip(0x701, STR_NULL), SetResize(1, 1), SetFill(1, 0), SetScrollbar(GRP_WIDGET_LIST_VEHICLE_SCROLLBAR),
 				NWidget(WWT_SCROLLBAR, COLOUR_GREY, GRP_WIDGET_LIST_VEHICLE_SCROLLBAR),
 			EndContainer(),
 			NWidget(NWID_HORIZONTAL),