Pat Rabbitte says he would rather take tax advice from Mick Wallace than economic advice from Fianna Fáil.
Minister Rabbitte was commenting on an apparent resurgence in support for Fianna Fáil, who have a 21% approval rating in the latest IPSOS/MRBI opinion poll.
The survey puts Fianna Fáil as the second most popular party, a position it hasn't held for more than two years.
Yet the Communications Minister says they cannot be taken seriously.
"I find it very difficult to take Fianna Fáil seriously, given that the major issue that confronts the country is economic recovery.
"I'd rather take advice on my tax returns from Mick Wallace than take advice from Fianna Fáil on the economy. I really don't take it too seriously."