Documentation inconsistent about QSize::isValid

The documentation for QSize sais in the "Detailed description":

"The isValid() function determines if a size is valid (a valid size has both width and height greater than zero)."

But in the documentation for the isValid() function it sais:

"Returns true if both the width and height is equal to or greater than 0; otherwise returns false."

now in case of QSize(0,40) the first documentation would give isValid()==false, where the second documentation would give isValid()==true.

the second documentation matches the code. please correct the first.

Thanks
Erik