diff --git a/src/PIL/WebPImagePlugin.py b/src/PIL/WebPImagePlugin.py
index 7dd3f5272..2101271c4 100644
--- a/src/PIL/WebPImagePlugin.py
+++ b/src/PIL/WebPImagePlugin.py
@@ -222,7 +222,7 @@ def _save_all(im, fp, filename):
     if (
         not isinstance(background, (list, tuple))
         or len(background) != 4
-        or not all(v >= 0 and v < 256 for v in background)
+        or not all(0 <= v < 256 for v in background)
     ):
         raise OSError(
             "Background color is not an RGBA tuple clamped to (0-255): %s"