diff --git a/docs/serving/samples/hello-world/helloworld-go/Dockerfile b/docs/serving/samples/hello-world/helloworld-go/Dockerfile
index 06531f631..3adce8bf9 100644
--- a/docs/serving/samples/hello-world/helloworld-go/Dockerfile
+++ b/docs/serving/samples/hello-world/helloworld-go/Dockerfile
@@ -1,4 +1,4 @@
-# Use the offical Golang image to create a build artifact.
+# Use the official Golang image to create a build artifact.
 # This is based on Debian and sets the GOPATH to /go.
 # https://hub.docker.com/_/golang
 FROM golang:1.13 as builder
diff --git a/docs/serving/samples/hello-world/helloworld-go/README.md b/docs/serving/samples/hello-world/helloworld-go/README.md
index b4e55463f..e2567a06b 100644
--- a/docs/serving/samples/hello-world/helloworld-go/README.md
+++ b/docs/serving/samples/hello-world/helloworld-go/README.md
@@ -69,7 +69,7 @@ cd knative-docs/docs/serving/samples/hello-world/helloworld-go
    [Deploying Go servers with Docker](https://blog.golang.org/docker).
 
    ```docker
-   # Use the offical Golang image to create a build artifact.
+   # Use the official Golang image to create a build artifact.
    # This is based on Debian and sets the GOPATH to /go.
    # https://hub.docker.com/_/golang
    FROM golang:1.13 as builder