When a show is as popular as HBO's "Game of Thrones," spoilers can become an obsession for some fans. But while some viewers search out and pore over any bit of information about upcoming episodes, star Maisie Williams is no fan of those who share details meant to be kept under wraps.

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"It’s such a childish, annoying thing to do. And yeah, it’s sad. It really annoys me," Williams said in a recent interview with RadioTimes.com. As frustrated as she is by stray details getting out ahead of schedule, however, her real annoyance stems from knowing that the source of many leaks comes from those actually involved with the hit series' production. "It’s even more annoying when you know [the leaks] might be from someone on the inside, and it’s just like… you’re trying to make something really cool, that is really cool, and people really like, and it’s like 'stop ruining it.'"

Based on George R.R. Martin’s bestselling “A Song of Ice and Fire” novels, HBO’s “Game of Thrones” debuts its seventh season this summer on HBO, starring Peter Dinklage, Kit Harington, Emilia Clarke, Lena Headey and Maisie Williams.