diff --git a/updater/internal/action/service_action.go b/updater/internal/action/service_action.go
index 8781df5da..b3cd2a606 100644
--- a/updater/internal/action/service_action.go
+++ b/updater/internal/action/service_action.go
@@ -71,7 +71,7 @@ func NewServiceUpdateAction(logger *zap.Logger, installDir string) *ServiceUpdat
 	return &ServiceUpdateAction{
 		backupSvc: service.NewService(
 			namedLogger,
-			"", // latestDir doesn't matter here
+			installDir,
 			service.WithServiceFile(path.BackupServiceFile(installDir)),
 		),
 	}
diff --git a/updater/internal/service/service_windows.go b/updater/internal/service/service_windows.go
index a79f8815a..4bf9a6858 100644
--- a/updater/internal/service/service_windows.go
+++ b/updater/internal/service/service_windows.go
@@ -56,6 +56,7 @@ func NewService(logger *zap.Logger, installDir string, opts ...Option) Service {
 		newServiceFilePath: filepath.Join(path.ServiceFileDir(installDir), "windows_service.json"),
 		serviceName:        defaultServiceName,
 		productName:        defaultProductName,
+		installDir:         installDir,
 		logger:             logger.Named("windows-service"),
 	}