diff --git a/pkg/scaffold/v2/prometheus/monitor.go b/pkg/scaffold/v2/prometheus/monitor.go
index 414441e8292..0b1250308b6 100644
--- a/pkg/scaffold/v2/prometheus/monitor.go
+++ b/pkg/scaffold/v2/prometheus/monitor.go
@@ -52,5 +52,6 @@ spec:
     - path: /metrics
       port: https
   selector:
-    control-plane: controller-manager
+    matchLabels:
+      control-plane: controller-manager
 `
diff --git a/testdata/project-v2-multigroup/config/prometheus/monitor.yaml b/testdata/project-v2-multigroup/config/prometheus/monitor.yaml
index e2d9b087fa5..9b8047b760f 100644
--- a/testdata/project-v2-multigroup/config/prometheus/monitor.yaml
+++ b/testdata/project-v2-multigroup/config/prometheus/monitor.yaml
@@ -12,4 +12,5 @@ spec:
     - path: /metrics
       port: https
   selector:
-    control-plane: controller-manager
+    matchLabels:
+      control-plane: controller-manager
diff --git a/testdata/project-v2/config/prometheus/monitor.yaml b/testdata/project-v2/config/prometheus/monitor.yaml
index e2d9b087fa5..9b8047b760f 100644
--- a/testdata/project-v2/config/prometheus/monitor.yaml
+++ b/testdata/project-v2/config/prometheus/monitor.yaml
@@ -12,4 +12,5 @@ spec:
     - path: /metrics
       port: https
   selector:
-    control-plane: controller-manager
+    matchLabels:
+      control-plane: controller-manager