diff --git a/order_cmd.c b/order_cmd.c
index f49d9a05bd..02e3f42670 100644
--- a/order_cmd.c
+++ b/order_cmd.c
@@ -522,7 +522,7 @@ int32 CmdModifyOrder(int x, int y, uint32 flags, uint32 p1, uint32 p2)
 	VehicleID veh = p1 & 0xFFFF;
 
 	if (!IsVehicleIndex(veh)) return CMD_ERROR;
-	if (p2 != OFB_FULL_LOAD || p2 != OFB_UNLOAD || p2 != OFB_NON_STOP) return CMD_ERROR;
+	if (p2 != OFB_FULL_LOAD && p2 != OFB_UNLOAD && p2 != OFB_NON_STOP) return CMD_ERROR;
 
 	v = GetVehicle(veh);
 	if (v->type == 0 || !CheckOwnership(v->owner)) return CMD_ERROR;