diff --git a/packages/@aws-cdk-testing/framework-integ/test/aws-ec2/test/integ.instance-init.ts b/packages/@aws-cdk-testing/framework-integ/test/aws-ec2/test/integ.instance-init.ts
index 424e9155554b1..15dfc02f434cf 100644
--- a/packages/@aws-cdk-testing/framework-integ/test/aws-ec2/test/integ.instance-init.ts
+++ b/packages/@aws-cdk-testing/framework-integ/test/aws-ec2/test/integ.instance-init.ts
@@ -56,6 +56,7 @@ new ec2.Instance(stack, 'Instance2', {
           environmentVariables: {
             MY_VAR: 'its me :)',
           },
+          environmentFiles: ['/myvars.env'],
         }),
       ]),
     },