diff --git a/tests/conftest.py b/tests/conftest.py
index 6ade3488ec..402347f534 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -7,6 +7,7 @@
 import pytest
 
 import daft
+import daft.context
 from daft.table import MicroPartition
 
 # import all conftest
@@ -172,7 +173,10 @@ def assert_df_equals(
             raise
 
 
-@pytest.fixture(scope="function", params=[1, None])
+@pytest.fixture(
+    scope="function",
+    params=[1, None] if daft.context.get_context().daft_execution_config.enable_native_executor else [None],
+)
 def with_morsel_size(request):
     morsel_size = request.param
     with daft.context.execution_config_ctx(default_morsel_size=morsel_size):
diff --git a/tests/cookbook/conftest.py b/tests/cookbook/conftest.py
index c04f7ab208..f62b74203e 100644
--- a/tests/cookbook/conftest.py
+++ b/tests/cookbook/conftest.py
@@ -42,7 +42,10 @@ def service_requests_csv_pd_df():
     return pd.read_csv(COOKBOOK_DATA_CSV, keep_default_na=False)[COLUMNS]
 
 
-@pytest.fixture(scope="module", params=[1, 2])
+@pytest.fixture(
+    scope="module",
+    params=[1, 2] if daft.context.get_context().daft_execution_config.enable_native_executor is False else [1],
+)
 def repartition_nparts(request):
     """Adds a `n_repartitions` parameter to test cases which provides the number of
     partitions that the test case should repartition its dataset into for testing