diff --git a/UNICADOworkflow/src/post_operations/check_tlars_and_gradients.py b/UNICADOworkflow/src/post_operations/check_tlars_and_gradients.py
index ba7edebb7488b981145c47890406891a448c0913..7df9b3937ba9274f7fa668e2717f5b03e1ae3744 100644
--- a/UNICADOworkflow/src/post_operations/check_tlars_and_gradients.py
+++ b/UNICADOworkflow/src/post_operations/check_tlars_and_gradients.py
@@ -144,14 +144,14 @@ def check_tlars_and_gradients(paths_and_names, parameter_for_design_case):
         h_max_operating_fulfilled = False
     # maximum operating altitude (one engine inoperative)
     h_max_oei_checked = root_of_aircraft_exchange_tree.find(
-        './requirement_compliance/top_level_aircraft_requirements/maximum_one_engine_operating_altitude/'
+        './requirement_compliance/top_level_aircraft_requirements/maximum_altitude_one_engine_inoperative/'
         'checked/value')
     if h_max_oei_checked is not None:
         h_max_oei_checked = h_max_oei_checked.text.lower() in ['true', 'True', '1', 't']
     else:
         h_max_oei_checked = False
     h_max_oei_fulfilled = root_of_aircraft_exchange_tree.find(
-        './requirement_compliance/top_level_aircraft_requirements/maximum_one_engine_operating_altitude/'
+        './requirement_compliance/top_level_aircraft_requirements/maximum_altitude_one_engine_inoperative/'
         'maintainable/value')
     if h_max_oei_fulfilled is not None:
         h_max_oei_fulfilled = h_max_oei_fulfilled.text.lower() in ['true', 'True', '1', 't']
diff --git a/UNICADOworkflow/src/pre_condition/read_requirements.py b/UNICADOworkflow/src/pre_condition/read_requirements.py
index 8f4b6612f9e4bc3741216d3681ca134e03e366c0..d0844fec1fa0724646aa50f9b83fb64113250ce3 100644
--- a/UNICADOworkflow/src/pre_condition/read_requirements.py
+++ b/UNICADOworkflow/src/pre_condition/read_requirements.py
@@ -125,7 +125,7 @@ def read_requirements(paths_and_names):
         'maximum_operating_altitude/value').text)
     altitude_max_operating_oei = float(root_of_aircraft_exchange_tree.find(
         './requirements_and_specifications/requirements/top_level_aircraft_requirements/flight_envelope/'
-        'maximum_one_engine_operating_altitude/value').text)
+        'maximum_altitude_one_engine_inoperative/value').text)
     #wing_span_limit = float(root_of_aircraft_exchange_tree.find(
      #   './Requirements/SizeLimits/SpanLimit').text)
     icao_aerodrome_reference_code = str(root_of_aircraft_exchange_tree.find(