diff --git a/pkg/app/pipedv1/plugin/kubernetes/deployment/server_test.go b/pkg/app/pipedv1/plugin/kubernetes/deployment/server_test.go
index b84d662903..5a6ed41d4e 100644
--- a/pkg/app/pipedv1/plugin/kubernetes/deployment/server_test.go
+++ b/pkg/app/pipedv1/plugin/kubernetes/deployment/server_test.go
@@ -165,7 +165,7 @@ func TestDeploymentService_executeK8sSyncStage(t *testing.T) {
 	assert.Equal(t, "piped-id", deployment.GetAnnotations()["pipecd.dev/piped"])
 	assert.Equal(t, "app-id", deployment.GetAnnotations()["pipecd.dev/application"])
 	assert.Equal(t, "apps/v1", deployment.GetAnnotations()["pipecd.dev/original-api-version"])
-	assert.Equal(t, "apps/v1:Deployment:default:simple", deployment.GetAnnotations()["pipecd.dev/resource-key"])
+	assert.Equal(t, "apps/v1:Deployment::simple", deployment.GetAnnotations()["pipecd.dev/resource-key"]) // This assertion differs from the non-plugin-arched piped's Kubernetes platform provider, but we decided to change this behavior.
 	assert.Equal(t, "0123456789", deployment.GetAnnotations()["pipecd.dev/commit-hash"])
 
 }