diff --git a/src/PIL/ImageStat.py b/src/PIL/ImageStat.py
index 7c8753a63..efef0802f 100644
--- a/src/PIL/ImageStat.py
+++ b/src/PIL/ImageStat.py
@@ -69,7 +69,7 @@ class Stat:
 
         v = []
         for i in range(0, len(self.h), 256):
-            v.append(minmax(self.h[i:i+256]))
+            v.append(minmax(self.h[i : i + 256]))
         return v
 
     def _getcount(self):