diff --git a/collision.go b/collision.go
index 2d9cee4..b042d0f 100644
--- a/collision.go
+++ b/collision.go
@@ -33,7 +33,7 @@ func RectIntersection(r AABB2d, p Point2d, v Vector2d) (bool, bool, Point2d) {
 		if wall_left {
 			return wall_left, inside, col1
 		}
-		wall_top, col2 := Intersection(p, r.A, v, Vector2d{X: r.B.X - r.A.X, Y: 0})
+		wall_top, col2 := Intersection(p, r.B, v, Vector2d{X: -r.B.X + r.A.X, Y: 0})
 		if wall_top {
 			return wall_top, inside, col2
 		}
@@ -41,7 +41,7 @@ func RectIntersection(r AABB2d, p Point2d, v Vector2d) (bool, bool, Point2d) {
 		if wall_right {
 			return wall_right, inside, col3
 		}
-		wall_bottom, col4 := Intersection(p, r.B, v, Vector2d{X: -r.B.X + r.A.X, Y: 0})
+		wall_bottom, col4 := Intersection(p, r.A, v, Vector2d{X: r.B.X - r.A.X, Y: 0})
 		if wall_bottom {
 			return wall_bottom, inside, col4
 		}