See qtbase commit 97fcf3bc987a18f32233fea550eb4a5a22e2b822

Change-Id: I4a94ab12a6bac0505fe4e6da4a72cb8b7e0b7032
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>
Reviewed-by: Christian Kandeler <christian.kandeler@digia.com>