diff --git a/h2/quick_hull.py b/h2/quick_hull.py
index 9053e5e..7621a7f 100644
--- a/h2/quick_hull.py
+++ b/h2/quick_hull.py
@@ -59,13 +59,14 @@ def quick_hull(points: Set[Point]):
     right = max(points)
 
     hull = {left, right}
+    points = points - hull
 
     find_hull({p for p in points if not is_left(left, right, p)},
               left,
               right,
               hull)
 
-    find_hull({p for p in points if is_left(left, right, p)},
+    find_hull({p for p in points if not is_left(right, left, p)},
               right,
               left,
               hull)
@@ -95,7 +96,7 @@ def find_hull(points: Set[Point], p: Point, q: Point, hull: Set[Point]):
     find_hull(s2, farthest, q, hull)
 
 
-points = {gen_point() for _ in range(10)}
-hull = quick_hull(points)
+peepees = {gen_point() for _ in range(11)}
+hulliees = quick_hull(peepees)
 
-display(points, hull)
+display(peepees, hulliees)