diff --git a/pkg/downloader/extension.go b/pkg/downloader/extension.go
index da7c4ac2..7a3b5752 100644
--- a/pkg/downloader/extension.go
+++ b/pkg/downloader/extension.go
@@ -50,6 +50,7 @@ func NewStoreDownloader(opts ...ExtensionDownloaderOption) PlatformAwareOCIDownl
 }
 
 func (d *ExtensionDownloader) Download(name, tag, _ string) (reader io.Reader, err error) {
+	name = strings.TrimPrefix(name, "atest-store-")
 	d.extFile = d.GetTargetFile(name)
 	image := fmt.Sprintf("%s/atest-ext-%s-%s", d.imagePrefix, d.kind, name)
 	reader, err = d.OCIDownloader.Download(image, tag, d.extFile)
diff --git a/pkg/server/store_ext_manager.go b/pkg/server/store_ext_manager.go
index a05a103f..9c902fc2 100644
--- a/pkg/server/store_ext_manager.go
+++ b/pkg/server/store_ext_manager.go
@@ -126,7 +126,7 @@ func (s *storeExtManager) Start(name, socket string) (err error) {
 		if err != nil {
 			err = fmt.Errorf("not found extension, try to download it, error: %v", err)
 			go func() {
-				ociDownloader := downloader.NewStoreDownloader()
+				ociDownloader := s.ociDownloader
 				ociDownloader.WithKind("store")
 				ociDownloader.WithOS(s.execer.OS())
 				reader, dErr := ociDownloader.Download(name, "", "")