diff --git a/scenario_execution_ros/scenario_execution_ros/actions/assert_topic_latency.py b/scenario_execution_ros/scenario_execution_ros/actions/assert_topic_latency.py
index d8a172ac..601fade6 100644
--- a/scenario_execution_ros/scenario_execution_ros/actions/assert_topic_latency.py
+++ b/scenario_execution_ros/scenario_execution_ros/actions/assert_topic_latency.py
@@ -29,7 +29,7 @@ class AssertTopicLatency(BaseAction):
     def __init__(self, topic_name: str, topic_type: str, latency: float, comparison_operator: bool, rolling_average_count: int, wait_for_first_message: bool):
         super().__init__()
         self.topic_name = topic_name
-        self.topic_type_str = topic_type
+        self.topic_type = topic_type
         self.latency = latency
         self.comparison_operator_feedback = comparison_operator[0]
         self.comparison_operator = get_comparison_operator(comparison_operator)
@@ -101,8 +101,8 @@ def check_topic(self):
             for name, topic_type in available_topics:
                 if name == self.topic_name:
                     topic_type = topic_type[0].replace('/', '.')
-                    if self.topic_type_str:
-                        if self.topic_type_str == topic_type:
+                    if self.topic_type:
+                        if self.topic_type == topic_type:
                             self.call_subscriber()
                             self.is_topic = True
                             return True
@@ -124,14 +124,14 @@ def check_topic(self):
                 return True
 
     def call_subscriber(self):
-        datatype_in_list = self.topic_type_str.split(".")
-        self.topic_type = getattr(
+        datatype_in_list = self.topic_type.split(".")
+        topic_type = getattr(
             importlib.import_module(".".join(datatype_in_list[:-1])),
             datatype_in_list[-1]
         )
 
         self.subscription = self.node.create_subscription(
-            msg_type=self.topic_type,
+            msg_type=topic_type,
             topic=self.topic_name,
             callback=self._callback,
             qos_profile=get_qos_preset_profile(['sensor_data']))