Lohan's attorney, Shawn Chapman Holly, said the actress switched her alcohol program but did not notify the court of the change.
Judge Marsha N. Revel, who presided over the hearing, said it was the actress' responsibility to inform the court of any changes related to her three years probation sentence.
Judge Revel said there was "no indication of dirty tests" in regards to Lohan's sobriety.
Lohan's attorney the said the weekend of negative speculation was difficult for the actress.
The actress is serving out a three-year probation after pleading no contest to two charges of DUI and pleading guilty to two charges of being under the influence of a controlled substance and reckless driving in 2007, and could go to jail if she were to violate any of its terms.
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