diff --git a/test_launch_ros/test/test_launch_ros/actions/test_set_parameter.py b/test_launch_ros/test/test_launch_ros/actions/test_set_parameter.py
index ddf866f7..1c906092 100644
--- a/test_launch_ros/test/test_launch_ros/actions/test_set_parameter.py
+++ b/test_launch_ros/test/test_launch_ros/actions/test_set_parameter.py
@@ -111,7 +111,7 @@ def test_set_param_with_node():
     set_param.execute(lc)
     node._perform_substitutions(lc)
     actual_command = [perform_substitutions(lc, item) for item in
-                      node.cmd if type(item[0]) == TextSubstitution]
+                      node.cmd if isinstance(item[0], TextSubstitution)]
     assert actual_command.count('--params-file') == 1
     assert actual_command.count('-p') == 1
 
diff --git a/test_launch_ros/test/test_launch_ros/actions/test_set_parameters_from_file.py b/test_launch_ros/test/test_launch_ros/actions/test_set_parameters_from_file.py
index acb3a5f2..e3cf4573 100644
--- a/test_launch_ros/test/test_launch_ros/actions/test_set_parameters_from_file.py
+++ b/test_launch_ros/test/test_launch_ros/actions/test_set_parameters_from_file.py
@@ -78,10 +78,10 @@ def test_set_param_with_node():
     node_2._perform_substitutions(lc)
 
     actual_command_1 = [perform_substitutions(lc, item) for item in
-                        node_1.cmd if type(item[0]) == TextSubstitution]
+                        node_1.cmd if isinstance(item[0], TextSubstitution)]
 
     actual_command_2 = [perform_substitutions(lc, item) for item in
-                        node_2.cmd if type(item[0]) == TextSubstitution]
+                        node_2.cmd if isinstance(item[0], TextSubstitution)]
 
     assert actual_command_1[3] == '--params-file'
     assert os.path.isfile(actual_command_1[4])