diff --git a/Tests/test_file_png.py b/Tests/test_file_png.py
index dbbe72afa..505d48c81 100644
--- a/Tests/test_file_png.py
+++ b/Tests/test_file_png.py
@@ -245,7 +245,7 @@ class TestFilePng(PillowTestCase):
 
         im = Image.open(TEST_PNG_FILE)
         im.load()
-        self.assertRaises(RuntimeError, lambda: im.verify())
+        self.assertRaises(RuntimeError, im.verify)
 
     def test_roundtrip_dpi(self):
         # Check dpi roundtripping
diff --git a/Tests/test_image_load.py b/Tests/test_image_load.py
index b1fc73182..f9d92e13c 100644
--- a/Tests/test_image_load.py
+++ b/Tests/test_image_load.py
@@ -18,7 +18,7 @@ class TestImageLoad(PillowTestCase):
     def test_close(self):
         im = Image.open("Tests/images/hopper.gif")
         im.close()
-        self.assertRaises(ValueError, lambda: im.load())
+        self.assertRaises(ValueError, im.load)
         self.assertRaises(ValueError, lambda: im.getpixel((0, 0)))
 
     def test_contextmanager(self):
diff --git a/Tests/test_imagepalette.py b/Tests/test_imagepalette.py
index e56c61390..a16b590ba 100644
--- a/Tests/test_imagepalette.py
+++ b/Tests/test_imagepalette.py
@@ -117,7 +117,7 @@ class TestImagePalette(PillowTestCase):
         palette = raw("RGB", list(range(256))*3)
 
         # Act / Assert
-        self.assertRaises(ValueError, lambda: palette.tobytes())
+        self.assertRaises(ValueError, palette.tobytes)
         self.assertRaises(ValueError, lambda: palette.getcolor((1, 2, 3)))
         f = self.tempfile("temp.lut")
         self.assertRaises(ValueError, lambda: palette.save(f))
diff --git a/Tests/test_imagewin.py b/Tests/test_imagewin.py
index 7cfd7fe5c..c32290e43 100644
--- a/Tests/test_imagewin.py
+++ b/Tests/test_imagewin.py
@@ -114,7 +114,7 @@ class TestImageWinDib(PillowTestCase):
         buffer = dib.tobytes()
 
         # Act/Assert
-        self.assert_warning(DeprecationWarning, lambda: dib.tostring())
+        self.assert_warning(DeprecationWarning, dib.tostring)
         self.assert_warning(DeprecationWarning, lambda: dib.fromstring(buffer))