Yes, it's a (paraphrase from memory) of the first law of robotics. It's good that that's more in line with how the ai should be used, I suppose ;)

Ed: according to Wikipedia I got it pretty close:

> First Law

> A robot may not injure a human being or, through inaction, allow a human being to come to harm.

> Second Law

> A robot must obey the orders given it by human beings except where such orders would conflict with the First Law.

> Third Law

> A robot must protect its own existence as long as such protection does not conflict with the First or Second Law.

https://en.m.wikipedia.org/wiki/Three_Laws_of_Robotics

Just remember, Asimov himself pointed out through his works that the three laws are not enough! :)