diff --git a/packages/@aws-cdk/aws-elasticloadbalancingv2/lib/alb/application-target-group.ts b/packages/@aws-cdk/aws-elasticloadbalancingv2/lib/alb/application-target-group.ts
index 0a5f3243ffe70..b33fd30829118 100644
--- a/packages/@aws-cdk/aws-elasticloadbalancingv2/lib/alb/application-target-group.ts
+++ b/packages/@aws-cdk/aws-elasticloadbalancingv2/lib/alb/application-target-group.ts
@@ -229,7 +229,7 @@ export class ApplicationTargetGroup extends TargetGroupBase implements IApplicat
    * @default Average over 5 minutes
    */
   public metricUnhealthyHostCount(props?: cloudwatch.MetricOptions) {
-    return this.metric('UnhealthyHostCount', {
+    return this.metric('UnHealthyHostCount', {
       statistic: 'Average',
       ...props
     });