Rihanna is being sued by her next door neighbor.

On Tuesday, Christian Moeller sued the 21-year-old pop singer and Stephen Yacobian, who owns the house Rihanna is renting in Los Angeles. According to the suit, Moeller, a college professor, claims the “Umbrella” singer allows cars of visitors to routinely park or wait on his property.

He is seeking unspecified damages for trespass, invasion of privacy and other claims.