diff --git a/prometheus/podmonitor.yaml b/prometheus/podmonitor.yaml
index 2f68c1a6..b5ddfb7b 100644
--- a/prometheus/podmonitor.yaml
+++ b/prometheus/podmonitor.yaml
@@ -11,4 +11,4 @@ spec:
     matchLabels:
       sparkoperator.k8s.io/app-name: fink-broker-stream2raw
   podMetricsEndpoints:
-  - port: "8090"
+  - portNumber: 8090