The 28-year-old, who found the back of the net in the Rossoneri's 1-1 draw against Torino, wants to prove himself in Serie A following his loan move from Valencia.
"I am very happy for my first goal with AC Milan," Rami told reporters.
"It was a great feeling to score today. I have known Philippe Mexes for years, and went straight to him after the goal.
"La Liga is completely different from Serie A, but now I understand how Serie A works. I have to prove I am at the required level now."
Rami has made 25 appearances for the France national side, scoring one goal in the process.