Chris Brown has been ordered to stay in a Miami rehab for another two months.

Doctors at the facility blame the musician's behavior on his previously undiagnosed PTSD and bipolar disorder, but they do claim that he is making improvements and becoming less impulsive.

Despite a report in which Brown said he "is happy with the program," he reportedly didn't look too happy to hear that his stay would be extended. A probation officer wrote to the court that Brown has indeed showed progressing and "[responding] well to treatment," but he additionally pointed out that the positive changes in his behavior "[have] occurred only recently."

Brown had been placed in rehab back in November after his was charged with a misdemeanor assault in Washington, D.C. - a direct violation of his probation for his 2009 assault on then-girlfriend Rihanna.