diff --git a/src/ansys/optislang/core/tcp/nodes.py b/src/ansys/optislang/core/tcp/nodes.py
index cbf6aceb3..539804f6c 100644
--- a/src/ansys/optislang/core/tcp/nodes.py
+++ b/src/ansys/optislang/core/tcp/nodes.py
@@ -2201,7 +2201,7 @@ def save_designs_as_json(self, hid: str, file_path: Union[Path, str]) -> File:
         ValueError
             Raised when ``hid`` does not exist.
         """
-        self.__save_designs_as(hid, file_path, FileOutputFormat.JSON)
+        return self.__save_designs_as(hid, file_path, FileOutputFormat.JSON)
 
     def save_designs_as_csv(self, hid: str, file_path: Union[Path, str]) -> File:
         """Save designs for a given state to CSV file.
@@ -2233,7 +2233,7 @@ def save_designs_as_csv(self, hid: str, file_path: Union[Path, str]) -> File:
         ValueError
             Raised when ``hid`` does not exist.
         """
-        self.__save_designs_as(hid, file_path, FileOutputFormat.CSV)
+        return self.__save_designs_as(hid, file_path, FileOutputFormat.CSV)
 
     def __save_designs_as(self, hid: str, file_path: Union[Path, str], format: FileOutputFormat):
         """Save designs for a given state.
diff --git a/tests/tcp/test_tcp_nodes.py b/tests/tcp/test_tcp_nodes.py
index 3c49c3524..403d5da79 100644
--- a/tests/tcp/test_tcp_nodes.py
+++ b/tests/tcp/test_tcp_nodes.py
@@ -456,12 +456,12 @@ def test_save_designs_as(tmp_path: Path, tmp_example_project):
         project = osl.project
         root_system = project.root_system
 
-        __test_save_designs_as_json(tmp_path, root_system)
         __test_save_designs_as_csv(tmp_path, root_system)
+        __test_save_designs_as_json(tmp_path, root_system)
 
 
-def __test_save_designs_as_json(tmp_path: Path, root_system: TcpRootSystemProxy):
-    """Test `save_designs_as_json` method."""
+def __test_save_designs_as_csv(tmp_path: Path, root_system: TcpRootSystemProxy):
+    """Test `save_designs_as_csv` method."""
     sensitivity: TcpParametricSystemProxy = root_system.find_nodes_by_name("Sensitivity")[0]
     s_hids = sensitivity.get_states_ids()
     csv_file_path = tmp_path / "FirstDesign.csv"
@@ -470,8 +470,8 @@ def __test_save_designs_as_json(tmp_path: Path, root_system: TcpRootSystemProxy)
     assert csv_file.exists
 
 
-def __test_save_designs_as_csv(tmp_path: Path, root_system: TcpRootSystemProxy):
-    """Test `save_designs_as_csv` method."""
+def __test_save_designs_as_json(tmp_path: Path, root_system: TcpRootSystemProxy):
+    """Test `save_designs_as_json` method."""
     most_inner_sensitivity: TcpParametricSystemProxy = root_system.find_nodes_by_name(
         "MostInnerSensitivity", 3
     )[0]