diff --git a/source/patterns/@aws-solutions-constructs/aws-fargate-kinesisfirehose/test/aws-fargate-kinesisfirehose.test.ts b/source/patterns/@aws-solutions-constructs/aws-fargate-kinesisfirehose/test/aws-fargate-kinesisfirehose.test.ts
index 83d26ac86..2191cf13b 100644
--- a/source/patterns/@aws-solutions-constructs/aws-fargate-kinesisfirehose/test/aws-fargate-kinesisfirehose.test.ts
+++ b/source/patterns/@aws-solutions-constructs/aws-fargate-kinesisfirehose/test/aws-fargate-kinesisfirehose.test.ts
@@ -668,7 +668,7 @@ test('Construct uses existingFargateServiceObject when provided', () => {
 
   const existingVpc = defaults.getTestVpc(stack);
 
-  const [existingFargateServiceObject, existingContainerDefinitionObject] = defaults.CreateFargateService(stack, 'test-existing-fargate-service',
+  const createFargateServiceResponse = defaults.CreateFargateService(stack, 'test-existing-fargate-service',
     existingVpc,
     { clusterName: 'my-cluster' },
     defaults.fakeEcrRepoArn,
@@ -682,8 +682,8 @@ test('Construct uses existingFargateServiceObject when provided', () => {
     publicApi: false,
     existingVpc,
     existingKinesisFirehose: destination.kinesisFirehose,
-    existingFargateServiceObject,
-    existingContainerDefinitionObject
+    existingFargateServiceObject: createFargateServiceResponse.service,
+    existingContainerDefinitionObject: createFargateServiceResponse.containerDefinition
   });
 
   expect(stack).toCountResources('AWS::ECS::Cluster', 1);
diff --git a/source/patterns/@aws-solutions-constructs/aws-fargate-kinesisstreams/test/fargate-kinesisstreams.test.ts b/source/patterns/@aws-solutions-constructs/aws-fargate-kinesisstreams/test/fargate-kinesisstreams.test.ts
index f07066f93..6e864825c 100644
--- a/source/patterns/@aws-solutions-constructs/aws-fargate-kinesisstreams/test/fargate-kinesisstreams.test.ts
+++ b/source/patterns/@aws-solutions-constructs/aws-fargate-kinesisstreams/test/fargate-kinesisstreams.test.ts
@@ -573,7 +573,7 @@ test('Construct uses existingFargateServiceObject when provided', () => {
 
   const existingVpc = defaults.getTestVpc(stack);
 
-  const [existingFargateServiceObject, existingContainerDefinitionObject] = defaults.CreateFargateService(stack, 'test-existing-fargate-service',
+  const createFargateServiceResponse = defaults.CreateFargateService(stack, 'test-existing-fargate-service',
     existingVpc,
     { clusterName: 'my-cluster' },
     defaults.fakeEcrRepoArn,
@@ -586,8 +586,8 @@ test('Construct uses existingFargateServiceObject when provided', () => {
   new FargateToKinesisStreams(stack, 'test-fargate-kinesisstreams', {
     publicApi: false,
     existingVpc,
-    existingFargateServiceObject,
-    existingContainerDefinitionObject
+    existingFargateServiceObject: createFargateServiceResponse.service,
+    existingContainerDefinitionObject: createFargateServiceResponse.containerDefinition
   });
 
   expect(stack).toCountResources('AWS::ECS::Cluster', 1);