diff --git a/tests/test_reader.py b/tests/test_reader.py
index 13c38fb29..7e16d9d66 100644
--- a/tests/test_reader.py
+++ b/tests/test_reader.py
@@ -255,9 +255,9 @@ def test_issue297():
 
 
 @pytest.mark.parametrize(
-    ("password", "shouldFail"), [("test", False), ("qwerty", True)]
+    ("password", "should_fail"), [("test", False), ("qwerty", True)]
 )
-def test_get_page_of_encrypted_file(password, shouldFail):
+def test_get_page_of_encrypted_file(password, should_fail):
     """
     Check if we can read a page of an encrypted file.
 
@@ -265,7 +265,7 @@ def test_get_page_of_encrypted_file(password, shouldFail):
     IndexError for get_page() of decrypted file
     """
     path = os.path.join(RESOURCE_ROOT, "encrypted-file.pdf")
-    if shouldFail:
+    if should_fail:
         with pytest.raises(PdfReadError):
             PdfReader(path, password=password)
     else: