diff --git a/python3/bin/perfmon b/python3/bin/perfmon
index 58be93284d7..c78c891f60d 100644
--- a/python3/bin/perfmon
+++ b/python3/bin/perfmon
@@ -940,11 +940,11 @@ class SRMonitor(ObjectMonitor):
             num seconds this alarm disabled after an alarm is sent (default '3600')
        * consolidation_fn:
             how to combine variables from rrd_updates into one value
-            (default is 'get_percent_sr_usage' for 'physical_utilistation',
+            (default is 'get_percent_sr_usage' for 'physical_utilisation',
             & 'sum' for everything else)
        * rrd_regex matches the names of variables
          from (xe sr-data-sources-list uuid=$sruuid) used to compute value
-         (has default for "physical_utilistaion")
+         (has default for "physical_utilisation")
     """
 
     def __init__(self, *args):
@@ -975,7 +975,7 @@ class SRMonitor(ObjectMonitor):
         elif config_tag == "alarm_auto_inhibit_period":
             return "3600"  # 1 hour
         elif config_tag == "alarm_trigger_level":
-            if variable_name == "physical_utilistaion":
+            if variable_name == "physical_utilisation":
                 return "0.8"  # trigger when 80% full
             else:
                 raise XmlConfigException(
diff --git a/python3/tests/test_perfmon.py b/python3/tests/test_perfmon.py
index c133a1171ac..98d99a14283 100644
--- a/python3/tests/test_perfmon.py
+++ b/python3/tests/test_perfmon.py
@@ -427,6 +427,14 @@ def test_process_rrd_updates(self, mock_xapisession):
         # get_percent_sr_usage([500, 6000])
         self.assertAlmostEqual(monitor.variables[0].value, 0.08333333333333333)
 
+    def test_alarm_trigger_level_physical_utilisation(self, _mock_xapisession):
+        uuid = 'e1ae3f5d-4c8b-4575-bbb8-2af7e8a2c31e'
+        monitor = perfmon.SRMonitor(uuid)
+        result = monitor.get_default_variable_config(
+            variable_name = "physical_utilisation",
+            config_tag = "alarm_trigger_level",
+        )
+        self.assertEqual(result, '0.8')
 
 class TestRRDUpdates(unittest.TestCase):
     '''Test Class RRDUpdates and RRDContentHandler'''