Kim Kardashian isn't happy with Saint's first word

Kim Kardashian and Kanye West were overjoyed to welcome son Saint in December last year.

And it seems he's growing up fast with the reality star admitting the seven-month-old has recently said his first word, although she's mot happy with it!

RELATED: Kim Kardashian admits North is struggling to be a big sister

RELATED: Can Taylor Swift actually sue Kim Kardashian and Kanye West?

Eek!

“He said 'Dada’ today, three times and I was like 'what?’ Kanye was so excited," the reality star told PEOPLE at MGM Grand’s Hakkasan nightclub in Las Vegas over the weekend.

"He was like 'I told him to say that.’ I was like, 'I just really wanted him to say 'Mama’ first.’”

Well, at least Kanye would be smiling!

Saint is the second child for couple, who are also parents to three-year-old North.

Last week Kim told Elle.com that her eldest daughter is struggling to adjust to life as a big sister.

'We talk about North being a big sister all the time," Kim said.

'Right now, because she's three, it's time to talk a lot about sharing. And North is great at sharing. She's still getting the concept of having a brother, though."

Despite having a close bond with Kourtney Kardashian's children Mason, Penelope, and Reign, Kim said North is still adjusting to having a sibling constantly around.

'Like, Penelope and Reign are her cousins, but Saint is here every day because Saint is her brother,' she said.

The 35-year-old has been working on helping bond her two children and getting North used to having a baby brother.

'I like to bring her in to say 'Good morning', she still wants things to be all about her, because she's three!

"But planting that seed every morning that the day starts with you and your brother, that's how I've been doing it. And she's getting so much better. I can't wait until they can really start communicating - although once he's big enough to start grabbing her toys, we'll have to get involved in a different way."