diff --git a/rclcpp/test/test_time_source.cpp b/rclcpp/test/test_time_source.cpp
index dbb4fd7..54c0e69 100644
--- a/rclcpp/test/test_time_source.cpp
+++ b/rclcpp/test/test_time_source.cpp
@@ -37,6 +37,11 @@ protected:
     rclcpp::init(0, nullptr);
   }
 
+  static void TearDownTestCase()
+  {
+    rclcpp::shutdown();
+  }
+
   void SetUp()
   {
     node = std::make_shared<rclcpp::Node>("my_node");
@@ -348,14 +353,14 @@ TEST_F(TestTimeSource, parameter_activation) {
   EXPECT_TRUE(ros_clock->ros_time_is_active());
 
   set_use_sim_time_parameter(
-    node, rclcpp::ParameterValue(rclcpp::ParameterType::PARAMETER_NOT_SET));
+    node, rclcpp::ParameterValue());
   EXPECT_TRUE(ros_clock->ros_time_is_active());
 
   set_use_sim_time_parameter(node, rclcpp::ParameterValue(false));
   EXPECT_FALSE(ros_clock->ros_time_is_active());
 
   set_use_sim_time_parameter(
-    node, rclcpp::ParameterValue(rclcpp::ParameterType::PARAMETER_NOT_SET));
+    node, rclcpp::ParameterValue());
   EXPECT_FALSE(ros_clock->ros_time_is_active());
 
   // If the use_sim_time parameter is not explicitly set to True, this clock's use of sim time