Sean Penn, Robin Wright Making Nice Again

For the second time in past two years, the couple attempts to undo divorce petition

Sean Penn's differences with Robin Wright Penn apparently aren't so irreconcilable.

For the second time in the past two years, the Oscar-winning actor and his missus are attempting to patch up their rocky relationship.

E! News has confirmed that the 48-year-old Milk man dispatched his lawyers to California's Marin County Superior Court yesterday to retract his request for legal separation, which he originally filed on April 24.

"It was an arrogant mistake," Penn, who's in New York shooting the political drama Fair Game, told the New York Daily News.

There was no immediate comment from Wright Penn, 43, who is a juror at the Cannes Film Festival.

The Penns met in 1990 and tied the knot in 1996.

It was Wright Penn who initially decided to deep-six their union, filing for divorce in December 2007, citing irreconcilable differences. But by April 2008, the duo had the divorce dismissed.

The reconciliation didn't stick, however, and last month it was Penn's turn to go to court. He requested legal separation and joint custody of their two children.

Just last week, Natalie Portman issued a statement refuting rumors that she and Penn were romantically involved.