diff --git a/kubernetes/kustomization.yaml b/kubernetes/kustomization.yaml
index b4ebc9e3..eda8b8c4 100644
--- a/kubernetes/kustomization.yaml
+++ b/kubernetes/kustomization.yaml
@@ -9,6 +9,7 @@ resources:
 - service.yaml
 - ../config/crd
 - ../config/rbac
+# If you change newName, update the e2e overlay in test/e2e/e2e_suite_test.go too.
 images:
 - name: plugin-barman-cloud
   newName: ghcr.io/cloudnative-pg/plugin-barman-cloud-testing
diff --git a/test/e2e/e2e_suite_test.go b/test/e2e/e2e_suite_test.go
index 4d62e025..64fae91a 100644
--- a/test/e2e/e2e_suite_test.go
+++ b/test/e2e/e2e_suite_test.go
@@ -57,9 +57,11 @@ var _ = SynchronizedBeforeSuite(func(ctx SpecContext) []byte {
 	const barmanCloudKustomizationPath = "./kustomize/kubernetes/"
 	barmanCloudKustomization := &kustomizeTypes.Kustomization{
 		Resources: []string{barmanCloudKustomizationPath},
+		// Override the image from the base kustomization (kubernetes/kustomization.yaml)
+		// with the locally-built one. The Name must match the newName in the base.
 		Images: []kustomizeTypes.Image{
 			{
-				Name:    "docker.io/library/plugin-barman-cloud",
+				Name:    "ghcr.io/cloudnative-pg/plugin-barman-cloud-testing",
 				NewName: "registry.barman-cloud-plugin:5000/plugin-barman-cloud",
 				NewTag:  "testing",
 			},