diff --git a/cosmotech/coal/store/store.py b/cosmotech/coal/store/store.py
index d940fffa..059fdf9f 100644
--- a/cosmotech/coal/store/store.py
+++ b/cosmotech/coal/store/store.py
@@ -72,7 +72,7 @@ def add_table(self, table_name: str, data=pyarrow.Table, replace: bool = False):
                 rows = curs.adbc_ingest(table_name, data, "replace" if replace else "create_append")
                 LOGGER.debug(T("coal.common.data_transfer.rows_inserted").format(rows=rows, table_name=table_name))
 
-    def execute_query(self, sql_query: str, parameters: list = (None,)) -> pyarrow.Table:
+    def execute_query(self, sql_query: str, parameters: list = None) -> pyarrow.Table:
         batch_size = 1024
         batch_size_increment = 1024
         while True:
diff --git a/tests/integration/coal/test_store/test_store_store.py b/tests/integration/coal/test_store/test_integration_store_store.py
similarity index 62%
rename from tests/integration/coal/test_store/test_store_store.py
rename to tests/integration/coal/test_store/test_integration_store_store.py
index 126685e7..9409d7b2 100644
--- a/tests/integration/coal/test_store/test_store_store.py
+++ b/tests/integration/coal/test_store/test_integration_store_store.py
@@ -18,7 +18,7 @@ def store():
     store.reset()
 
 
-class TestStore:
+class TestIntegrationStore:
     """Tests for the store class."""
 
     def test_get_table(self, store):
@@ -66,3 +66,37 @@ def test_add_get_table_with_upper_and_lower_case(self, store):
         assert upper_result
         assert UPPER_result
         assert upper_result == UPPER_result
+
+    def test_execute_query_without_parameters(self, store):
+        """Test execute_query with a plain SQL query and no parameters"""
+
+        # Arrange
+        table_name = "items"
+        table = pa.Table.from_arrays([pa.array([1, 2, 3]), pa.array(["a", "b", "c"])], names=["id", "name"])
+        store.add_table(table_name, table)
+
+        # Act
+        result = store.execute_query(f'SELECT * FROM "{table_name}" ORDER BY id')
+
+        # Assert
+        assert result is not None
+        assert result.num_rows == 3
+        assert result.column("id").to_pylist() == [1, 2, 3]
+        assert result.column("name").to_pylist() == ["a", "b", "c"]
+
+    def test_execute_query_with_parameters(self, store):
+        """Test execute_query with a parameterized SQL query"""
+
+        # Arrange
+        table_name = "items"
+        table = pa.Table.from_arrays([pa.array([1, 2, 3]), pa.array(["a", "b", "c"])], names=["id", "name"])
+        store.add_table(table_name, table)
+
+        # Act
+        result = store.execute_query(f'SELECT * FROM "{table_name}" WHERE id = ?', parameters=[2])
+
+        # Assert
+        assert result is not None
+        assert result.num_rows == 1
+        assert result.column("id").to_pylist() == [2]
+        assert result.column("name").to_pylist() == ["b"]
diff --git a/tests/unit/coal/test_store/test_store_store.py b/tests/unit/coal/test_store/test_store_store.py
index 8e37f5b6..de1fb24e 100644
--- a/tests/unit/coal/test_store/test_store_store.py
+++ b/tests/unit/coal/test_store/test_store_store.py
@@ -270,7 +270,7 @@ def test_execute_query(self, mock_connect):
         # Assert
         mock_connect.assert_called_once()
         mock_cursor.adbc_statement.set_options.assert_called_once_with(**{"adbc.sqlite.query.batch_rows": "1024"})
-        mock_cursor.execute.assert_called_once_with(sql_query, (None,))
+        mock_cursor.execute.assert_called_once_with(sql_query, None)
         mock_cursor.fetch_arrow_table.assert_called_once()
         assert result == expected_table
 
@@ -306,7 +306,7 @@ def test_execute_query_with_oserror(self, mock_connect):
         # First call with batch_size = 1024, second with batch_size = 2048
         mock_cursor.adbc_statement.set_options.assert_any_call(**{"adbc.sqlite.query.batch_rows": "1024"})
         mock_cursor.adbc_statement.set_options.assert_any_call(**{"adbc.sqlite.query.batch_rows": "2048"})
-        mock_cursor.execute.assert_called_once_with(sql_query, (None,))
+        mock_cursor.execute.assert_called_once_with(sql_query, None)
         mock_cursor.fetch_arrow_table.assert_called_once()
         assert result == expected_table