diff --git a/pkg/cloudprovider/providers/gce/gce.go b/pkg/cloudprovider/providers/gce/gce.go
index fc6f584aaed..9c5da0cfec4 100644
--- a/pkg/cloudprovider/providers/gce/gce.go
+++ b/pkg/cloudprovider/providers/gce/gce.go
@@ -303,7 +303,11 @@ func generateCloudConfig(configFile *ConfigFile) (cloudConfig *CloudConfig, err
 // If no tokenSource is specified, uses oauth2.DefaultTokenSource.
 // If managedZones is nil / empty all zones in the region will be managed.
 func CreateGCECloud(config *CloudConfig) (*GCECloud, error) {
+	// Remove any pre-release version and build metadata from the semver, leaving only the MAJOR.MINOR.PATCH portion.
+        // See http://semver.org/.
 	version := strings.Split(strings.Split(version.Get().GitVersion, "-")[0], "+")[0]
+
+        // Create a user-agent header append string to supply to the Google API clients, to identify Kubernetes as the origin of the GCP API calls.
 	userAgent := fmt.Sprintf("(%s %s) Kubernetes/%s", runtime.GOOS, runtime.GOARCH, version)
 
 	client, err := newOauthClient(config.TokenSource)