diff --git a/code/light_modes.py b/code/light_modes.py
index 8dedc65..5c11a1d 100644
--- a/code/light_modes.py
+++ b/code/light_modes.py
@@ -57,7 +57,7 @@ def sparkles(np_strp, col):
     np_strp.fill((0, 0, 0))
 
     for _ in range(int(np_strp.n / 4)):
-        pix = int(urandom.getrandbits(8) / 256 * (np_strp.n - 1))
+        pix = int(urandom.getrandbits(8) / 256 * (np_strp.n))
         print(pix)
         np_strp[pix] = col