diff --git a/packages/@aws-cdk/aws-ec2-alpha/lib/ipam.ts b/packages/@aws-cdk/aws-ec2-alpha/lib/ipam.ts
index bf6e7f99264bf..644e7e74cbde9 100644
--- a/packages/@aws-cdk/aws-ec2-alpha/lib/ipam.ts
+++ b/packages/@aws-cdk/aws-ec2-alpha/lib/ipam.ts
@@ -203,7 +203,7 @@ export interface IIpamPool {
   readonly ipamIpv4Cidrs?: string[];
 
   /**
-   * Function to associate a IPv6 address with IPAM pool
+   * Function to associate an IPv6 address with IPAM pool
    */
   provisionCidr(id: string, options: IpamPoolCidrProvisioningOptions): CfnIPAMPoolCidr;
 
diff --git a/packages/@aws-cdk/aws-iot-alpha/lib/topic-rule.ts b/packages/@aws-cdk/aws-iot-alpha/lib/topic-rule.ts
index 54448310ed146..ac3ff14197618 100644
--- a/packages/@aws-cdk/aws-iot-alpha/lib/topic-rule.ts
+++ b/packages/@aws-cdk/aws-iot-alpha/lib/topic-rule.ts
@@ -157,7 +157,7 @@ export class TopicRule extends Resource implements ITopicRule {
   }
 
   /**
-   * Add a action to the topic rule.
+   * Add an action to the topic rule.
    *
    * @param action the action to associate with the topic rule.
    */