diff --git a/projectile.go b/projectile.go
index 174844b..0321406 100644
--- a/projectile.go
+++ b/projectile.go
@@ -28,7 +28,7 @@ func (p *Projectile) Tick(g *game) {
 				continue
 			}
 
-			player_rect := v.RectFromPoint(r.Position, 3)
+			player_rect := v.AASquareAtPoint(r.Position, 3)
 			collision, _, _ := v.RectIntersection(player_rect, p.Position, v_scaled)
 			if collision {
 				hit_player = true
@@ -45,7 +45,7 @@ func (p *Projectile) Tick(g *game) {
 	}
 
 	// Are we going to intersect the destination zone in this tick?
-	r_dest := v.RectFromPoint(p.MoveTo, 3.0)
+	r_dest := v.AASquareAtPoint(p.MoveTo, 3.0)
 
 	travel := newPos.Sub(p.Position)
 	arrived, _, pos := v.RectIntersection(r_dest, p.Position, travel)