diff --git a/src/editor/operations/add_random_colour_spill.py b/src/editor/operations/add_random_colour_spill.py
index e27eafa..0ccb784 100644
--- a/src/editor/operations/add_random_colour_spill.py
+++ b/src/editor/operations/add_random_colour_spill.py
@@ -4,17 +4,17 @@ from ..utils import random
 
 def add_random_colour_spill(image: Image, range: float) -> Image:
     matrix = (
-        random(1 / range, range),
+        random(1 - range, 1 + range),
         0.0,
         0.0,
         0.0,
         0.0,
-        random(1 / range, range),
+        random(1 - range, 1 + range),
         0.0,
         0.0,
         0.0,
         0.0,
-        random(1 / range, range),
+        random(1 - range, 1 + range),
         0.0,
     )
     return image.convert("RGB", matrix)