diff --git a/pulse_lib/segments/data_classes/data_HVI_variables.py b/pulse_lib/segments/data_classes/data_HVI_variables.py
index ebb9287951be3d2b65d871de3187a17b39067049..f73556b6568bf048464d25a1bb25bf283af46329 100644
--- a/pulse_lib/segments/data_classes/data_HVI_variables.py
+++ b/pulse_lib/segments/data_classes/data_HVI_variables.py
@@ -16,6 +16,7 @@ class marker_HVI_variable(parent_data):
         """
         super().__init__()
         self.data = dict()
+        self.end_time = 0
 
     @property
     def HVI_markers(self):