Former No. 1 Caroline Wozniacki says she did not realize she couldn’t ask her father and coach, Piotr, for coaching advice while he was sitting in the stands during her 4-6, 6-1, 6-4 win over Marion Bartoli in Dubai.

Wozniacki, who is a member of the WTA Players Council (which helps make tour rules), received a warning for illegal coaching.

“I’m not sure if it’s coaching if I talk to the coach, but apparently that’s new rules, so I guess that I can’t say anything nowadays,” she told reporters. “I was telling him things, and all of a sudden I hear I get a code violation. I’m like, okay.”

She then added with a laugh: “I was telling him what I was doing wrong. There’s not much he can say because he knows that if he says yes, then he’s in trouble, and if he says no, he’s in trouble too.”