diff --git a/lib/ansible/modules/extras/cloud/amazon/ec2_vpc_subnet_facts.py b/lib/ansible/modules/extras/cloud/amazon/ec2_vpc_subnet_facts.py
index 7168d160604..ebd18936120 100644
--- a/lib/ansible/modules/extras/cloud/amazon/ec2_vpc_subnet_facts.py
+++ b/lib/ansible/modules/extras/cloud/amazon/ec2_vpc_subnet_facts.py
@@ -70,6 +70,7 @@ EXAMPLES = '''
     - publicA
     - publicB
     - publicC
+  register: subnet_facts
 
 - set_fact:
     subnet_ids: "{{ subnet_facts.results|map(attribute='subnets.0.id')|list }}"