diff --git a/tests/hazmat/primitives/test_rsa.py b/tests/hazmat/primitives/test_rsa.py
index adc46de..7d104da 100644
--- a/tests/hazmat/primitives/test_rsa.py
+++ b/tests/hazmat/primitives/test_rsa.py
@@ -1384,7 +1384,7 @@
 @pytest.mark.rsa
 class TestRSAEncryption(object):
     @pytest.mark.parametrize(
-        "key_size,pad",
+        ("key_size", "pad"),
         itertools.product(
             (1024, 1025, 1029, 1031, 1536, 2048),
             (
@@ -1420,7 +1420,7 @@
         assert recovered_pt == pt
 
     @pytest.mark.parametrize(
-        ["key_size", "pad"],
+        ("key_size", "pad"),
         itertools.product(
             (1024, 1025, 1029, 1031, 1536, 2048),
             (