diff --git a/content/en/docs/tasks/security/cert-management/custom-ca-k8s/index.md b/content/en/docs/tasks/security/cert-management/custom-ca-k8s/index.md
index b30eeb1fc8..98712a052d 100644
--- a/content/en/docs/tasks/security/cert-management/custom-ca-k8s/index.md
+++ b/content/en/docs/tasks/security/cert-management/custom-ca-k8s/index.md
@@ -39,7 +39,7 @@ Note that this example should only be used for basic evaluation. The use of the
         pilot:
           k8s:
             env:
-            # Indicate to Istiod that we use an Custom Certificate Authority
+            # Indicate to Istiod that we use a Custom Certificate Authority
             - name: EXTERNAL_CA
               value: ISTIOD_RA_KUBERNETES_API
             # Tells Istiod to use the Kubernetes legacy CA Signer