diff --git a/docs/eventing/samples/container-source/README.md b/docs/eventing/samples/container-source/README.md
index 250559f9a9f..3cafc458e63 100644
--- a/docs/eventing/samples/container-source/README.md
+++ b/docs/eventing/samples/container-source/README.md
@@ -14,7 +14,7 @@ creating your own event source as a ContainerSource.
 ### Prepare the heartbeats image
 
 Knative [event-sources](https://github.com/knative/eventing-contrib) has a
-sample of heartbeats event source. You could clone the source codes by
+sample of heartbeats event source. You could clone the source code by
 
 ```
 git clone -b "{{< branch >}}" https://github.com/knative/eventing-contrib.git
diff --git a/docs/eventing/sources/containersource.md b/docs/eventing/sources/containersource.md
index 1637a2200d1..b248dcd489f 100644
--- a/docs/eventing/sources/containersource.md
+++ b/docs/eventing/sources/containersource.md
@@ -30,7 +30,7 @@ This example shows how the heartbeats container sends events to the Event Displa
 
 ### Preparing the heartbeats image
 Knative [event-sources](https://github.com/knative/eventing-contrib) has a
-sample of heartbeats event source. You could clone the source codes by
+sample of heartbeats event source. You could clone the source code by
 
 ```
 git clone -b "{{< branch >}}" https://github.com/knative/eventing-contrib.git