diff --git a/community/samples/serving/helloworld-java-micronaut/README.md b/community/samples/serving/helloworld-java-micronaut/README.md
index d73fa85b1..5086b85a0 100644
--- a/community/samples/serving/helloworld-java-micronaut/README.md
+++ b/community/samples/serving/helloworld-java-micronaut/README.md
@@ -26,7 +26,7 @@ You must meet the following requirements to complete this sample:
 
 **Tip**: You can clone the [Knatve/docs repo](https://github.com/knative/docs)
 and then modify the source files. Alternatively, learn more by manually creating
-the files youself.
+the files yourself.
 
 ## Creating and configuring the sample code
 
diff --git a/community/samples/serving/helloworld-r/Dockerfile b/community/samples/serving/helloworld-r/Dockerfile
index e64c67c32..7906d2164 100644
--- a/community/samples/serving/helloworld-r/Dockerfile
+++ b/community/samples/serving/helloworld-r/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:1.12 as builder
diff --git a/community/samples/serving/helloworld-r/README.md b/community/samples/serving/helloworld-r/README.md
index e426349de..1ff68d2f8 100644
--- a/community/samples/serving/helloworld-r/README.md
+++ b/community/samples/serving/helloworld-r/README.md
@@ -70,7 +70,7 @@ cd knative-docs/docs/serving/samples/hello-world/helloworld-r
    1. Create a new file named `Dockerfile` and copy the code block below into it.
 
       ```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:1.12 as builder
diff --git a/docs/serving/samples/grpc-ping-go/Dockerfile b/docs/serving/samples/grpc-ping-go/Dockerfile
index 1ece47486..3c81a785c 100644
--- a/docs/serving/samples/grpc-ping-go/Dockerfile
+++ b/docs/serving/samples/grpc-ping-go/Dockerfile
@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-# 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:1.12 as builder
diff --git a/docs/serving/samples/secrets-go/Dockerfile b/docs/serving/samples/secrets-go/Dockerfile
index 87f50a513..840d4fdde 100644
--- a/docs/serving/samples/secrets-go/Dockerfile
+++ b/docs/serving/samples/secrets-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 as builder
diff --git a/docs/serving/samples/secrets-go/README.md b/docs/serving/samples/secrets-go/README.md
index 9a700c560..96422325e 100644
--- a/docs/serving/samples/secrets-go/README.md
+++ b/docs/serving/samples/secrets-go/README.md
@@ -89,7 +89,7 @@ cd knative-docs/docs/serving/samples/secrets-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 as builder