diff --git a/Tests/test_image.py b/Tests/test_image.py
index 092bc07f6..a72694ec1 100644
--- a/Tests/test_image.py
+++ b/Tests/test_image.py
@@ -667,7 +667,7 @@ class TestImage:
         # Test illegal image mode
         with hopper() as im:
             with pytest.raises(ValueError):
-                im.remap_palette(None)
+                im.remap_palette([])
 
     def test_remap_palette_transparency(self) -> None:
         im = Image.new("P", (1, 2), (0, 0, 0))
@@ -770,7 +770,7 @@ class TestImage:
         assert dict(exif)
 
         # Test that exif data is cleared after another load
-        exif.load(None)
+        exif.load(b"")
         assert not dict(exif)
 
         # Test loading just the EXIF header
diff --git a/Tests/test_image_resize.py b/Tests/test_image_resize.py
index 57fcf9a34..1166371b8 100644
--- a/Tests/test_image_resize.py
+++ b/Tests/test_image_resize.py
@@ -309,7 +309,7 @@ class TestImageResize:
         # Test unknown resampling filter
         with hopper() as im:
             with pytest.raises(ValueError):
-                im.resize((10, 10), "unknown")
+                im.resize((10, 10), -1)
 
     @skip_unless_feature("libtiff")
     def test_transposed(self) -> None: