diff --git a/content/en/docs/collector/configuration.md b/content/en/docs/collector/configuration.md
index 0a78db729990..71afcaa5f660 100644
--- a/content/en/docs/collector/configuration.md
+++ b/content/en/docs/collector/configuration.md
@@ -290,6 +290,9 @@ receivers:
     protocols:
       grpc:
         endpoint: 0.0.0.0:4317
+        tls:
+          cert_file: cert.pem
+          key_file: cert-key.pem
       http:
         endpoint: 0.0.0.0:4318