A packaging material is provided, comprising a set of crease lines (10, 10') along which the packaging material is intended to be folded in order to form a package. The set of crease lines (10, 10') comprises at least one first crease line (10a, 10'a) being configured to fold easier than an adjacent second crease line (10b, 10'b). The said crease lines are intended to define a corner surface of the package.