diff --git a/metadata/service/agent/output/prometheus_client.yml b/metadata/service/agent/output/prometheus_client.yml
index 5537b75..57b98bb 100644
--- a/metadata/service/agent/output/prometheus_client.yml
+++ b/metadata/service/agent/output/prometheus_client.yml
@@ -6,4 +6,5 @@
           bind:
             address: 0.0.0.0
             port: 9126
+          string_as_label: false
           engine: prometheus