The Indian Army were sceptical about the two feet gauge chosen for the line and requested that a wider standard gauge be used for mountain and light strategic railways. Eventually the government agreed that the gauge was too narrow for was essentially a capital city and for military purposes. As a result, the contract with the railway company was revised on 15 November 1901 and the line gauge changed to with the track built to date being regauged. Some sources however state the regauging wasn't undertaken until 1905.