diff --git a/pytest_cases/tests/advanced/test_memoize.py b/pytest_cases/tests/advanced/test_memoize.py
index 6ddac0ba..28267941 100644
--- a/pytest_cases/tests/advanced/test_memoize.py
+++ b/pytest_cases/tests/advanced/test_memoize.py
@@ -1,4 +1,5 @@
 from pytest_cases import cases_data, CaseDataGetter, THIS_MODULE, case_tags
+from pytest_cases.tests.utils import nb_pytest_parameters, get_pytest_param
 
 try:  # python 3.2+
     from functools import lru_cache
@@ -75,17 +76,20 @@ def test_c(case_data  # type: CaseDataGetter
 def test_assert_parametrized():
     """Asserts that all tests are parametrized with the correct number of cases"""
 
-    assert len(test_a.pytestmark) == 1
-    assert len(test_a.pytestmark[0].args) == 2
-    assert test_a.pytestmark[0].args[0] == 'case_data'
-    assert len(test_a.pytestmark[0].args[1]) == 2
-
-    assert len(test_b.pytestmark) == 1
-    assert len(test_b.pytestmark[0].args) == 2
-    assert test_b.pytestmark[0].args[0] == 'case_data'
-    assert len(test_b.pytestmark[0].args[1]) == 2
-
-    assert len(test_c.pytestmark) == 1
-    assert len(test_c.pytestmark[0].args) == 2
-    assert test_c.pytestmark[0].args[0] == 'case_data'
-    assert len(test_c.pytestmark[0].args[1]) == 3
+    assert nb_pytest_parameters(test_a) == 1
+    param_args = get_pytest_param(test_a, 0)
+    assert len(param_args) == 2
+    assert param_args[0] == 'case_data'
+    assert len(param_args[1]) == 2
+
+    assert nb_pytest_parameters(test_b) == 1
+    param_args = get_pytest_param(test_b, 0)
+    assert len(param_args) == 2
+    assert param_args[0] == 'case_data'
+    assert len(param_args[1]) == 2
+
+    assert nb_pytest_parameters(test_c) == 1
+    param_args = get_pytest_param(test_c, 0)
+    assert len(param_args) == 2
+    assert param_args[0] == 'case_data'
+    assert len(param_args[1]) == 3
diff --git a/pytest_cases/tests/advanced/test_memoize_generators.py b/pytest_cases/tests/advanced/test_memoize_generators.py
index 434bdaef..c846e9e2 100644
--- a/pytest_cases/tests/advanced/test_memoize_generators.py
+++ b/pytest_cases/tests/advanced/test_memoize_generators.py
@@ -1,4 +1,5 @@
 from pytest_cases import cases_data, THIS_MODULE, cases_generator, CaseDataGetter, extract_cases_from_module
+from pytest_cases.tests.utils import nb_pytest_parameters, get_pytest_param
 
 try:  # python 3+: type hints
     from pytest_cases import CaseData
@@ -46,12 +47,14 @@ def test_assert_cases_are_here():
 def test_assert_parametrized():
     """Asserts that test_b is parametrized with the correct number of cases"""
 
-    assert len(test_a.pytestmark) == 1
-    assert len(test_a.pytestmark[0].args) == 2
-    assert test_a.pytestmark[0].args[0] == 'case_data'
-    assert len(test_a.pytestmark[0].args[1]) == 3
-
-    assert len(test_b.pytestmark) == 1
-    assert len(test_b.pytestmark[0].args) == 2
-    assert test_b.pytestmark[0].args[0] == 'case_data'
-    assert len(test_b.pytestmark[0].args[1]) == 3
+    assert nb_pytest_parameters(test_a) == 1
+    param_args = get_pytest_param(test_a, 0)
+    assert len(param_args) == 2
+    assert param_args[0] == 'case_data'
+    assert len(param_args[1]) == 3
+
+    assert nb_pytest_parameters(test_b) == 1
+    param_args = get_pytest_param(test_b, 0)
+    assert len(param_args) == 2
+    assert param_args[0] == 'case_data'
+    assert len(param_args[1]) == 3
diff --git a/pytest_cases/tests/advanced/test_parameters.py b/pytest_cases/tests/advanced/test_parameters.py
index db765af2..16483ef0 100644
--- a/pytest_cases/tests/advanced/test_parameters.py
+++ b/pytest_cases/tests/advanced/test_parameters.py
@@ -1,6 +1,7 @@
 import pytest
 
 from pytest_cases.tests.example_code import super_function_i_want_to_test
+from pytest_cases.tests.utils import nb_pytest_parameters, get_pytest_param
 
 from pytest_cases import cases_data, CaseDataGetter, THIS_MODULE, cases_generator
 try:
@@ -57,12 +58,14 @@ def test_with_parameters(case_data,  # type: CaseDataGetter
 def test_assert_parametrized():
     """Asserts that all tests are parametrized with the correct number of cases"""
 
-    assert len(test_with_parameters.pytestmark) == 2
+    assert nb_pytest_parameters(test_with_parameters) == 2
 
-    assert len(test_with_parameters.pytestmark[0].args) == 2
-    assert test_with_parameters.pytestmark[0].args[0] == 'version'
-    assert len(test_with_parameters.pytestmark[0].args[1]) == 2
+    param_args = get_pytest_param(test_with_parameters, 0)
+    assert len(param_args) == 2
+    assert param_args[0] == 'version'
+    assert len(param_args[1]) == 2
 
-    assert len(test_with_parameters.pytestmark[1].args) == 2
-    assert test_with_parameters.pytestmark[1].args[0] == 'case_data'
-    assert len(test_with_parameters.pytestmark[1].args[1]) == 1 + 1 + 2 * 2
+    param_args = get_pytest_param(test_with_parameters, 1)
+    assert len(param_args) == 2
+    assert param_args[0] == 'case_data'
+    assert len(param_args[1]) == 1 + 1 + 2 * 2
diff --git a/pytest_cases/tests/utils.py b/pytest_cases/tests/utils.py
new file mode 100644
index 00000000..524e4ed0
--- /dev/null
+++ b/pytest_cases/tests/utils.py
@@ -0,0 +1,16 @@
+def nb_pytest_parameters(f):
+    try:
+        # new pytest
+        return len(f.pytestmark)
+    except AttributeError:
+        # old pytest
+        return len(f.parametrize.args) / 2
+
+
+def get_pytest_param(f, i):
+    try:
+        # new pytest
+        return f.pytestmark[i].args
+    except AttributeError:
+        # old pytest
+        return f.parametrize.args[2*i:2*(i+1)]