Family First Senator Steve Fielding has stumbled while trying to clarify his views on the economy.

Senator Fielding has frequently recently mispronounced "fiscal policy" as "physical policy".

Speaking to journalists this morning he was questioned about the mispronunciation.

"I'll make it quite clear: fiscal, F-I-S-K-A-L," he spelt.

The journalist repeated his misspelling, at which point Senator Fielding corrected himself.

"F-I-S-C-A-L. Yeah, fiscal."

Senator Fielding has argued against a Greens push for a Senate hearing into the stimulus spending, saying it would only be worthwhile if Reserve Bank governor Glenn Stevens appeared as well as Treasury secretary Ken Henry.

He has argued it is important to consider both monetary and fiscal policy.