diff --git a/cluster/test-deploy/aws/openshift.yaml b/cluster/test-deploy/aws/openshift.yaml
index 21e55494b660c..942562464a7c6 100644
--- a/cluster/test-deploy/aws/openshift.yaml
+++ b/cluster/test-deploy/aws/openshift.yaml
@@ -74,7 +74,7 @@ aws:
   # (optional) Extra AWS tags to be applied to created resources.
   #
   # Example: `{ "key" = "value", "foo" = "bar" }`
-  extraTags: {"expirationDate" = "${EXPIRATION_DATE}"}
+  extraTags: {"expirationDate": "${EXPIRATION_DATE}"}
 
   # (optional) Name of IAM role to use to access AWS in order to deploy the Tectonic Cluster.
   # The name is also the full role's ARN.