diff --git a/app/Observers/SensorObserver.php b/app/Observers/SensorObserver.php
index 9d30b8e80d..ea31c2188d 100644
--- a/app/Observers/SensorObserver.php
+++ b/app/Observers/SensorObserver.php
@@ -122,7 +122,10 @@ class SensorObserver
             echo 'U';
         }
 
-        EventLog::log('Sensor Updated: ' . $sensor->sensor_class . ' ' . $sensor->sensor_type . ' ' . $sensor->sensor_index . ' ' . $sensor->sensor_descr, $sensor->device_id, 'sensor', Severity::Notice, $sensor->sensor_id);
+        // only post eventlog when relevant columns change
+        if ($sensor->isDirty(['sensor_class', 'sensor_oid', 'sensor_index', 'sensor_type', 'sensor_descr', 'group', 'sensor_divisor', 'sensor_multiplier', 'entPhysicalIndex', 'entPhysicalIndex_measured', 'user_func'])) {
+            EventLog::log('Sensor Updated: ' . $sensor->sensor_class . ' ' . $sensor->sensor_type . ' ' . $sensor->sensor_index . ' ' . $sensor->sensor_descr, $sensor->device_id, 'sensor', Severity::Notice, $sensor->sensor_id);
+        }
     }
 
     public function deleted(): void