He's come out today with this clarification amidst discussions on the rendition of the National Anthem on the opening ceremony of the 15th Pacific Games.
Performers at the opening ceremony sang "O arise all you sons and daughters of this land" instead of the original "O arise all you sons of this land."
The anthem was also not completed, sparking debate from politicians, churches and members of the public.
Sir Manasupe says there is only one officially recognized national anthem according to the National Identity Act.
He says the Head of State acting on the advice of the National Executive Council, officially declares the words of the national anthem adding any change will require careful and informed debate and is a matter for the people to decide.
Meanwhile Makoda Production has sincerely apologized to the country for the rendition of the anthem on July 4th.
Makoda, a PNG based company, put together the opening ceremony activities.
Its Managing Director Tanya Nugent says it's not their intention to offend anyone nor breach any laws.
She says while they appreciate the pride of PNG's national identity, they chose to put in the word 'daughters' in line with some of the key theme’s of the ceremony‘s creative narrative which included gender equality and opportunity for all.
Tanya Nugent says timing also made it impossible to complete the anthem on that night.
She assured all, particularly church leaders, that this was not meant to cause any disrespect.