diff --git a/moto/elbv2/responses.py b/moto/elbv2/responses.py
index 3e853518..3a83dbfa 100644
--- a/moto/elbv2/responses.py
+++ b/moto/elbv2/responses.py
@@ -572,6 +572,7 @@ DESCRIBE_LOAD_BALANCERS_TEMPLATE = """<DescribeLoadBalancersResponse xmlns="http
           <Code>provisioning</Code>
         </State>
         <Type>application</Type>
+        <IpAddressType>ipv4</IpAddressType>
       </member>
       {% endfor %}
     </LoadBalancers>