diff --git a/src/order_gui.cpp b/src/order_gui.cpp
--- a/src/order_gui.cpp
+++ b/src/order_gui.cpp
@@ -785,7 +785,9 @@ public:
 
 		this->CreateNestedTree();
 		this->vscroll = this->GetScrollbar(WID_O_SCROLLBAR);
-		this->GetWidget<NWidgetCore>(WID_O_DEPOT_ACTION)->tool_tip = STR_ORDER_TRAIN_DEPOT_ACTION_TOOLTIP + v->type;
+		if (NWidgetCore *nwid = this->GetWidget<NWidgetCore>(WID_O_DEPOT_ACTION); nwid != nullptr) {
+			nwid->tool_tip = STR_ORDER_TRAIN_DEPOT_ACTION_TOOLTIP + v->type;
+		}
 		this->FinishInitNested(v->index);
 
 		this->selected_order = -1;