diff --git a/clearml/automation/auto_scaler.py b/clearml/automation/auto_scaler.py
index 795d19e5..55232c67 100644
--- a/clearml/automation/auto_scaler.py
+++ b/clearml/automation/auto_scaler.py
@@ -288,9 +288,10 @@ class AutoScaler(object):
                         resource = WorkerId(worker_id).name
 
                     queue = self.resource_to_queue[resource]
+                    suffix = ', task_id={!r}'.format(task_id) if task_id else ''
                     self.logger.info(
-                        'Spinning new instance resource=%r, prefix=%r, queue=%r, task_id=%r',
-                        resource, self.workers_prefix, queue, task_id)
+                        'Spinning new instance resource=%r, prefix=%r, queue=%r%s',
+                        resource, self.workers_prefix, queue, suffix)
                     resource_conf = self.resource_configurations[resource]
                     worker_prefix = self.gen_worker_prefix(resource, resource_conf)
                     instance_id = self.driver.spin_up_worker(resource_conf, worker_prefix, queue, task_id=task_id)