diff --git a/src/autoreplace_cmd.cpp b/src/autoreplace_cmd.cpp
index b451be8de1..57083e1abd 100644
--- a/src/autoreplace_cmd.cpp
+++ b/src/autoreplace_cmd.cpp
@@ -215,7 +215,7 @@ static CommandCost ReplaceVehicle(Vehicle **w, byte flags, Money total_cost)
 			DoCommand(0, (front->index << 16) | new_v->index, 1, DC_EXEC, CMD_MOVE_RAIL_VEHICLE);
 		} else {
 			// copy/clone the orders
-			DoCommand(0, (old_v->index << 16) | new_v->index, IsOrderListShared(old_v) ? CO_SHARE : CO_COPY, DC_EXEC, CMD_CLONE_ORDER);
+			DoCommand(0, (old_v->index << 16) | new_v->index, old_v->IsOrderListShared() ? CO_SHARE : CO_COPY, DC_EXEC, CMD_CLONE_ORDER);
 			new_v->cur_order_index = old_v->cur_order_index;
 			ChangeVehicleViewWindow(old_v, new_v);
 			new_v->profit_this_year = old_v->profit_this_year;
diff --git a/src/order.h b/src/order.h
index e961cec807..350d8c5633 100644
--- a/src/order.h
+++ b/src/order.h
@@ -212,7 +212,6 @@ void InvalidateVehicleOrder(const Vehicle *v);
 bool VehicleHasDepotOrders(const Vehicle *v);
 void CheckOrders(const Vehicle*);
 void DeleteVehicleOrders(Vehicle *v);
-bool IsOrderListShared(const Vehicle *v);
 void AssignOrder(Order *order, Order data);
 bool CheckForValidOrders(const Vehicle* v);
 
diff --git a/src/order_cmd.cpp b/src/order_cmd.cpp
index 0c02597051..770c91880e 100644
--- a/src/order_cmd.cpp
+++ b/src/order_cmd.cpp
@@ -837,7 +837,7 @@ CommandCost CmdCloneOrder(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
 			}
 
 			/* make sure there are orders available */
-			delta = IsOrderListShared(dst) ? src->num_orders + 1 : src->num_orders - dst->num_orders;
+			delta = dst->IsOrderListShared() ? src->num_orders + 1 : src->num_orders - dst->num_orders;
 			if (!HasOrderPoolFree(delta))
 				return_cmd_error(STR_8831_NO_MORE_SPACE_FOR_ORDERS);
 
@@ -939,7 +939,7 @@ void BackupVehicleOrders(const Vehicle *v, BackuppedOrders *bak)
 	if (v->name != NULL) bak->name = strdup(v->name);
 
 	/* If we have shared orders, store it on a special way */
-	if (IsOrderListShared(v)) {
+	if (v->IsOrderListShared()) {
 		const Vehicle *u = (v->next_shared) ? v->next_shared : v->prev_shared;
 
 		bak->clone = u->index;
@@ -1209,7 +1209,7 @@ void DeleteVehicleOrders(Vehicle *v)
 
 	/* If we have a shared order-list, don't delete the list, but just
 	    remove our pointer */
-	if (IsOrderListShared(v)) {
+	if (v->IsOrderListShared()) {
 		Vehicle *u = v;
 
 		v->orders = NULL;
@@ -1257,17 +1257,6 @@ Date GetServiceIntervalClamped(uint index)
 	return (_patches.servint_ispercent) ? Clamp(index, MIN_SERVINT_PERCENT, MAX_SERVINT_PERCENT) : Clamp(index, MIN_SERVINT_DAYS, MAX_SERVINT_DAYS);
 }
 
-/**
- *
- * Check if we share our orders with an other vehicle
- *
- * @return Returns the vehicle who has the same order
- *
- */
-bool IsOrderListShared(const Vehicle *v)
-{
-	return v->next_shared != NULL || v->prev_shared != NULL;
-}
 
 /**
  *
diff --git a/src/order_gui.cpp b/src/order_gui.cpp
index 78d44603a4..6a05adf775 100644
--- a/src/order_gui.cpp
+++ b/src/order_gui.cpp
@@ -120,7 +120,7 @@ static void DrawOrdersWindow(Window *w)
 
 	v = GetVehicle(w->window_number);
 
-	shared_orders = IsOrderListShared(v);
+	shared_orders = v->IsOrderListShared();
 
 	SetVScrollCount(w, v->num_orders + 1);
 
diff --git a/src/vehicle_base.h b/src/vehicle_base.h
index cce77aa4dd..a19b80dfb3 100644
--- a/src/vehicle_base.h
+++ b/src/vehicle_base.h
@@ -461,6 +461,13 @@ public:
 	 * @return the first vehicle of the chain.
 	 */
 	inline Vehicle *First() const { return this->first; }
+
+	/**
+	 * Check if we share our orders with another vehicle.
+	 * This is done by checking the previous and next pointers in the shared chain.
+	 * @return true if there are other vehicles sharing the same order
+	 */
+	inline bool IsOrderListShared() const { return this->next_shared != NULL || this->prev_shared != NULL; };
 };
 
 /**