diff --git a/SAS/TMSS/backend/test/t_reports.py b/SAS/TMSS/backend/test/t_reports.py
index df3ffc29e553e01d24352f1b014c3aa8d65b610c..6288d1eb16cfa35127d2eef5e079714c3f1bce3d 100755
--- a/SAS/TMSS/backend/test/t_reports.py
+++ b/SAS/TMSS/backend/test/t_reports.py
@@ -424,16 +424,16 @@ class ReportTest(unittest.TestCase):
         self.assertEqual(completion_level['prognosis'], 0.0)   # Two 'unschedulable' Subtasks (one in 'regular' and one in 'commissioning')
 
         # Assert observation_hours_per_category
-        observation_hours_per_category = result['observation_hours_per_category']
-        self.assertAlmostEqual(observation_hours_per_category['total_duration'], 262980, places=4)  # 262980 = 600 'unassigned' + 1200 'regular' + 1200 'commissioning' + 86400*3+600 'test' + 3*60 'filler'
-        self.assertAlmostEqual(observation_hours_per_category['total_duration_successful'], 174780, places=4)  # 174000 = 600 'regular' + 600 'commissioning' + 86400*2 'test' + 780 unassigned
-        self.assertAlmostEqual(observation_hours_per_category['total_duration_successful_A'], 174780, places=4)
-        self.assertAlmostEqual(observation_hours_per_category['total_duration_successful_B'], 0, places=4)
-        self.assertAlmostEqual(observation_hours_per_category['total_duration_failed'], 88200, places=4)  # 88200 = 600 'regular' + 600 'commissioning' + 86400+600 'test
-        self.assertAlmostEqual(observation_hours_per_category['total_duration_idle'], 0, places=4)  # 'unassigned'
-        self.assertAlmostEqual(observation_hours_per_category['DDT Com Rep'], 1260, places=4)   # = 0 + 1200 + 0 + 60 (DDT + Com + Rep + filler)
-        self.assertAlmostEqual(observation_hours_per_category['TMSS Com'], 1200, places=4)
-        self.assertAlmostEqual(observation_hours_per_category['System Unavailability'], 2100, places=4)  # = 300 + 600 + 1200 (maintanance + software rollout + TMSS Com)
+        observation_durations_per_category = result['observation_durations_per_category']
+        self.assertAlmostEqual(observation_durations_per_category['total_duration'], 262980, places=4)  # 262980 = 600 'unassigned' + 1200 'regular' + 1200 'commissioning' + 86400*3+600 'test' + 3*60 'filler'
+        self.assertAlmostEqual(observation_durations_per_category['total_duration_successful'], 174780, places=4)  # 174000 = 600 'regular' + 600 'commissioning' + 86400*2 'test' + 780 unassigned
+        self.assertAlmostEqual(observation_durations_per_category['total_duration_successful_A'], 174780, places=4)
+        self.assertAlmostEqual(observation_durations_per_category['total_duration_successful_B'], 0, places=4)
+        self.assertAlmostEqual(observation_durations_per_category['total_duration_failed'], 88200, places=4)  # 88200 = 600 'regular' + 600 'commissioning' + 86400+600 'test
+        self.assertAlmostEqual(observation_durations_per_category['total_duration_idle'], 0, places=4)  # 'unassigned'
+        self.assertAlmostEqual(observation_durations_per_category['DDT Com Rep'], 1260, places=4)   # = 0 + 1200 + 0 + 60 (DDT + Com + Rep + filler)
+        self.assertAlmostEqual(observation_durations_per_category['TMSS Com'], 1200, places=4)
+        self.assertAlmostEqual(observation_durations_per_category['System Unavailability'], 2100, places=4)  # = 300 + 600 + 1200 (maintanance + software rollout + TMSS Com)
         # Assert percentages
         self.assertEqual(observation_durations_per_category['successful_perc'], 0.66)
         self.assertEqual(observation_durations_per_category['idle_perc'], 0)