diff --git a/output/src/direction.rs b/output/src/direction.rs
index 7705af3d..3f6f5dce 100644
--- a/output/src/direction.rs
+++ b/output/src/direction.rs
@@ -61,11 +61,10 @@ pub trait BspAreas<E: Output, A: Content<E>, B: Content<E>> {
         }).xywh();
         match direction {
             Above | Below => {
-                let x = ax.min(bx);
-                let w = (ax+aw).max(bx+bw).minus(x);
-                let y = ay.min(by);
-                let h = (ay+ah).max(by+bh).minus(y);
-                [[ax, ay, aw, ah].into(), [bx, by, bw, bh].into(), [x, y, w, h].into()]
+                let [x, y, w, h] = outer.center_xy([aw.max(bw), ah.max(bh)]);
+                let a = [(x + w/2.into()).minus(aw/2.into()), (y + h/2.into()).minus(ah/2.into()), aw, ah];
+                let b = [(x + w/2.into()).minus(bw/2.into()), (y + h/2.into()).minus(bh/2.into()), bw, bh];
+                [a.into(), b.into(), [x, y, w, h].into()]
             },
             South => {
                 let [x, y, w, h] = outer.center_xy([aw.max(bw), ah + bh]);