diff --git a/README.md b/README.md
index 328598a..6e44d89 100644
--- a/README.md
+++ b/README.md
@@ -3033,12 +3033,12 @@ def update_speed(mario, tiles, pressed):
     mario.spd = P(*[max(-limit, min(limit, s)) for limit, s in zip(MAX_SPEED, P(x, y))])
 
 def update_position(mario, tiles):
-    new_p = mario.rect.topleft
+    p = mario.rect.topleft
     larger_speed = max(abs(s) for s in mario.spd)
     for _ in range(larger_speed):
         mario.spd = stop_on_collision(mario.spd, get_boundaries(mario.rect, tiles))
-        new_p = P(*[a + s/larger_speed for a, s in zip(new_p, mario.spd)])
-        mario.rect.topleft = new_p
+        p = P(*[a + s/larger_speed for a, s in zip(p, mario.spd)])
+        mario.rect.topleft = p
 
 def get_boundaries(rect, tiles):
     deltas = {D.n: P(0, -1), D.e: P(1, 0), D.s: P(0, 1), D.w: P(-1, 0)}
diff --git a/index.html b/index.html
index ad31f2c..db8679d 100644
--- a/index.html
+++ b/index.html
@@ -2594,12 +2594,12 @@ SIZE, MAX_SPEED = <span class="hljs-number">50</span>, P(<span class="hljs-numbe
     mario.spd = P(*[max(-limit, min(limit, s)) <span class="hljs-keyword">for</span> limit, s <span class="hljs-keyword">in</span> zip(MAX_SPEED, P(x, y))])
 
 <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">update_position</span><span class="hljs-params">(mario, tiles)</span>:</span>
-    new_p = mario.rect.topleft
+    p = mario.rect.topleft
     larger_speed = max(abs(s) <span class="hljs-keyword">for</span> s <span class="hljs-keyword">in</span> mario.spd)
     <span class="hljs-keyword">for</span> _ <span class="hljs-keyword">in</span> range(larger_speed):
         mario.spd = stop_on_collision(mario.spd, get_boundaries(mario.rect, tiles))
-        new_p = P(*[a + s/larger_speed <span class="hljs-keyword">for</span> a, s <span class="hljs-keyword">in</span> zip(new_p, mario.spd)])
-        mario.rect.topleft = new_p
+        p = P(*[a + s/larger_speed <span class="hljs-keyword">for</span> a, s <span class="hljs-keyword">in</span> zip(p, mario.spd)])
+        mario.rect.topleft = p
 
 <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">get_boundaries</span><span class="hljs-params">(rect, tiles)</span>:</span>
     deltas = {D.n: P(<span class="hljs-number">0</span>, <span class="hljs-number">-1</span>), D.e: P(<span class="hljs-number">1</span>, <span class="hljs-number">0</span>), D.s: P(<span class="hljs-number">0</span>, <span class="hljs-number">1</span>), D.w: P(<span class="hljs-number">-1</span>, <span class="hljs-number">0</span>)}