diff --git a/packages/@aws-cdk/aws-ec2/lib/instance-types.ts b/packages/@aws-cdk/aws-ec2/lib/instance-types.ts
index 43a3c44d8d6fc..f235f2a7ebb9a 100644
--- a/packages/@aws-cdk/aws-ec2/lib/instance-types.ts
+++ b/packages/@aws-cdk/aws-ec2/lib/instance-types.ts
@@ -203,7 +203,7 @@ export enum InstanceClass {
  * What size of instance to use
  */
 export enum InstanceSize {
-  None = 'nano',
+  Nano = 'nano',
   Micro = 'micro',
   Small = 'small',
   Medium = 'medium',