diff --git a/charts/prometheus/templates/cm.yaml b/charts/prometheus/templates/cm.yaml
index 0063f21b79d0..8713bd1ea25f 100644
--- a/charts/prometheus/templates/cm.yaml
+++ b/charts/prometheus/templates/cm.yaml
@@ -2,9 +2,9 @@
 apiVersion: v1
 kind: ConfigMap
 metadata:
-{{- with .Values.server }}
+{{- with .Values.server.configMapAnnotations }}
   annotations:
-    {{- toYaml .configMapAnnotations | nindent 4 }}
+    {{- toYaml . | nindent 4 }}
 {{- end }}
   labels:
     {{- include "prometheus.server.labels" . | nindent 4 }}