Infrastructure Minister Tim Crookall says an 'oversight' led to his department breaching government guidelines on consultation over waste.
Arbory, Castletown and Malew MHK Jason Moorhouse asked a question for written response about why a waste strategy consultation was only four weeks long.
In his reply, Mr Crookall said an oversight meant the consultation period didn't conform to government principles.
He says the deadline has been extended to October 21 and local authorities have been told of the extra time.
The consultation can be found here.
Repairs on Peel Power Station to get underway
Manx Care doctor survey to be discussed by Tynwald
Weather warning for snow tonight
MHK queries safety at primary school in Ballabeg
Gales put two ferry sailings at risk tonight
Should the Island throw a birthday party for Barry Gibb?
Warning issued over icy roads
High ground could see 4 inches of snow on Saturday night