He said so while addressing a function in Vavuniya, when journalists raised a remark by Dinesh Gunawardena.
In parliament yesterday, Gunawardena talked about a possibility of a military coup against the government, in light of a continuing repression of democracy.
Responding, Senaratne said a military coup would be what the joint opposition liked to have, as it knew gaining power democratically was not possible.
They are mere dreams, he added.