diff --git a/sky/provision/gcp/mig_utils.py b/sky/provision/gcp/mig_utils.py
index 9e33f5171e2..3a7d0db1805 100644
--- a/sky/provision/gcp/mig_utils.py
+++ b/sky/provision/gcp/mig_utils.py
@@ -207,3 +207,4 @@ def wait_for_managed_group_to_be_stable(project_id: str, zone: str,
     except subprocess.CalledProcessError as e:
         stderr = e.stderr.decode('ascii')
         logger.info(stderr)
+        raise
diff --git a/sky/templates/gcp-ray.yml.j2 b/sky/templates/gcp-ray.yml.j2
index d986adbf6df..d7e787953d9 100644
--- a/sky/templates/gcp-ray.yml.j2
+++ b/sky/templates/gcp-ray.yml.j2
@@ -88,7 +88,9 @@ available_node_types:
       {%- if gcp_use_managed_instance_group %}
       managed-instance-group:
         run_duration: {{ run_duration }}
+        {%- if provision_timeout is defined and provision_timeout is not none %}
         provision_timeout: {{ provision_timeout }}
+        {%- endif %}
       {%- endif %}
       {%- if specific_reservations %}
       reservationAffinity: