diff --git a/monai/bundle/scripts.py b/monai/bundle/scripts.py
index 33affcf31b..f4652fb3e7 100644
--- a/monai/bundle/scripts.py
+++ b/monai/bundle/scripts.py
@@ -429,7 +429,7 @@ def verify_metadata(
     try:
         # the rest key-values in the _args are for `validate` API
         validate(instance=metadata, schema=schema, **_args)
-    except ValidationError as e:
+    except ValidationError as e:  # pylint: disable=E0712
         # as the error message is very long, only extract the key information
         logger.info(re.compile(r".*Failed validating", re.S).findall(str(e))[0] + f" against schema `{url}`.")
         return
diff --git a/tests/test_lesion_froc.py b/tests/test_lesion_froc.py
index 6b4989a9d5..b135b3eaeb 100644
--- a/tests/test_lesion_froc.py
+++ b/tests/test_lesion_froc.py
@@ -31,7 +31,7 @@ def save_as_tif(filename, array):
     if not filename.endswith(".tif"):
         filename += ".tif"
     file_path = os.path.join("tests", "testing_data", filename)
-    imwrite(file_path, array, compress="jpeg", tile=(16, 16))
+    imwrite(file_path, array, compression="jpeg", tile=(16, 16))
 
 
 def around(val, interval=3):
diff --git a/tests/test_wsireader.py b/tests/test_wsireader.py
index 6ee02143b8..3655100dab 100644
--- a/tests/test_wsireader.py
+++ b/tests/test_wsireader.py
@@ -84,7 +84,7 @@
 
 TEST_CASE_RGB_1 = [np.ones((3, 100, 100), dtype=np.uint8)]  # CHW
 
-TEST_CASE_ERROR_GRAY = [np.ones((16, 16), dtype=np.uint8)]  # no color channel
+TEST_CASE_ERROR_GRAY = [np.ones((16, 16, 2), dtype=np.uint8)]  # wrong color channel
 TEST_CASE_ERROR_3D = [np.ones((16, 16, 16, 3), dtype=np.uint8)]  # 3D + color
 
 
@@ -115,7 +115,7 @@ def save_gray_tiff(array: np.ndarray, filename: str):
         filename: the filename to be used for the tiff file.
     """
     img_gray = array
-    imwrite(filename, img_gray, shape=img_gray.shape, photometric="rgb")
+    imwrite(filename, img_gray, shape=img_gray.shape, photometric="minisblack")
 
     return filename
 
diff --git a/tests/test_wsireader_new.py b/tests/test_wsireader_new.py
index 456f5a9453..63d61dfeb3 100644
--- a/tests/test_wsireader_new.py
+++ b/tests/test_wsireader_new.py
@@ -72,7 +72,7 @@
 
 TEST_CASE_RGB_1 = [np.ones((3, 100, 100), dtype=np.uint8)]  # CHW
 
-TEST_CASE_ERROR_GRAY = [np.ones((16, 16), dtype=np.uint8)]  # no color channel
+TEST_CASE_ERROR_GRAY = [np.ones((16, 16, 2), dtype=np.uint8)]  # wrong color channel
 TEST_CASE_ERROR_3D = [np.ones((16, 16, 16, 3), dtype=np.uint8)]  # 3D + color
 
 
@@ -103,7 +103,7 @@ def save_gray_tiff(array: np.ndarray, filename: str):
         filename: the filename to be used for the tiff file.
     """
     img_gray = array
-    imwrite(filename, img_gray, shape=img_gray.shape, photometric="rgb")
+    imwrite(filename, img_gray, shape=img_gray.shape, photometric="minisblack")
 
     return filename