diff --git a/paasta_tools/setup_prometheus_adapter_config.py b/paasta_tools/setup_prometheus_adapter_config.py
index f6bf458add..0a69ffc642 100755
--- a/paasta_tools/setup_prometheus_adapter_config.py
+++ b/paasta_tools/setup_prometheus_adapter_config.py
@@ -316,7 +316,7 @@ def create_instance_active_requests_scaling_rule(
             avg(
                 paasta_instance:envoy_cluster__egress_cluster_upstream_rq_active{{{worker_filter_terms}}}
             ),
-            "kube_deployment", {deployment_name}, "", ""
+            "kube_deployment", "{deployment_name}", "", ""
         )
     """
     missing_instances = f"""