diff --git a/lib/ansible/modules/extras/cloud/amazon/ec2_customer_gateway.py b/lib/ansible/modules/extras/cloud/amazon/ec2_customer_gateway.py
index 64a77bb08bf..0138e8399e6 100644
--- a/lib/ansible/modules/extras/cloud/amazon/ec2_customer_gateway.py
+++ b/lib/ansible/modules/extras/cloud/amazon/ec2_customer_gateway.py
@@ -204,7 +204,7 @@ def main():
     module = AnsibleModule(argument_spec=argument_spec,
                            supports_check_mode=True,
                            required_if=[
-                               ('state', 'present', ['bgp_arn'])
+                               ('state', 'present', ['bgp_asn'])
                            ]
                            )