diff --git a/packages/@aws-cdk/aws-ec2/lib/vpc-flow-logs.ts b/packages/@aws-cdk/aws-ec2/lib/vpc-flow-logs.ts
index 3c0dcbe1053b9..c027d4424ccd4 100644
--- a/packages/@aws-cdk/aws-ec2/lib/vpc-flow-logs.ts
+++ b/packages/@aws-cdk/aws-ec2/lib/vpc-flow-logs.ts
@@ -510,5 +510,6 @@ export class FlowLog extends FlowLogBase {
     });
 
     this.flowLogId = flowLog.ref;
+    this.node.defaultChild = flowLog;
   }
 }
diff --git a/packages/@aws-cdk/aws-ec2/test/vpc-flow-logs.test.ts b/packages/@aws-cdk/aws-ec2/test/vpc-flow-logs.test.ts
index 3063a53a22fd6..ce27cd5f0eb30 100644
--- a/packages/@aws-cdk/aws-ec2/test/vpc-flow-logs.test.ts
+++ b/packages/@aws-cdk/aws-ec2/test/vpc-flow-logs.test.ts
@@ -442,6 +442,16 @@ describe('vpc flow logs', () => {
       },
     });
   });
+  test('flowlog has defaultchild', () => {
+    const stack = new Stack();
+    const vpc = new Vpc(stack, 'VPC');
+
+    const flowlog = new FlowLog(stack, 'FlowLog', {
+      resourceType: FlowLogResourceType.fromVpc(vpc),
+    });
+
+    expect(flowlog.node.defaultChild).toBeDefined();
+  });
 });
 
 function getTestStack(): Stack {