Nicole Kidman is planning to marry after dark to stop cameramen from taking photos of the ceremony.

The actress, who is rumoured to be tying the knot with Keith Urban on June 25, is worried that paparazzi will take pictures from low-flying helicopters.

Kidman has contacted local helicopter executive David Gemmell for advice on the matter.

Gemmell told The Mirror, "She was worried about the paparazzi. I'm doing something for her."

The Australian Civil Aviation Authority added, "Ms Kidman is making a very smart move."