diff --git a/Tests/test_file_tiff.py b/Tests/test_file_tiff.py
index 6f00afdac..d562b6fd0 100644
--- a/Tests/test_file_tiff.py
+++ b/Tests/test_file_tiff.py
@@ -874,16 +874,20 @@ class TestFileTiff:
                 with Image.open(test_file):
                     pass
 
-    def test_open_tiff_uint16_multiband(self):
+    def test_open_tiff_uint16_multiband(self) -> None:
         """Test opening multiband TIFFs and reading all channels."""
 
-        def check_pixel(im: Image.Image, expected_pixel, pos: tuple[int, int]):
+        def check_pixel(
+            im: Image.Image, expected_pixel: tuple[int, ...], pos: tuple[int, int]
+        ) -> None:
             actual_pixel = im.getpixel((0, 0))
             if isinstance(actual_pixel, int):
                 actual_pixel = (actual_pixel,)
             assert actual_pixel == expected_pixel
 
-        def check_image(im: Image.Image, width: int, height: int, expected_pixel):
+        def check_image(
+            im: Image.Image, width: int, height: int, expected_pixel: tuple[int, ...]
+        ) -> None:
             assert im.width == width
             assert im.height == height
             for x in range(im.width):
@@ -892,7 +896,7 @@ class TestFileTiff:
 
         base_value = 4660
         for i in range(1, 6):
-            pixel = tuple([base_value + j for j in range(0, i)])
+            pixel = tuple(base_value + j for j in range(i))
             infile = f"Tests/images/uint16_{i}_{base_value}.tif"
             im = Image.open(infile)