The changes include a provision saying no company has the right to halt trading in its shares before or during an annual general meeting or during a transaction.
The contract includes a long-term “Totalcare” package, which means Rolls-Royce will also provide service and maintenance to Emirates for the Trent 900 engines.
Dubai is planning to be a centre for an “Islamic economy” with sharia-compliant businesses ranging from banking , trade, food preparation, fashion, education and tourism.