diff --git a/headers/os/support/Archivable.h b/headers/os/support/Archivable.h
index 076a2a8ace..88fe3b8e62 100644
--- a/headers/os/support/Archivable.h
+++ b/headers/os/support/Archivable.h
@@ -21,8 +21,8 @@ namespace Archiving {
 }
 }
 
-using BPrivate::Archiving::BArchiveManager;
-using BPrivate::Archiving::BUnarchiveManager;
+using ::BPrivate::Archiving::BArchiveManager;
+using ::BPrivate::Archiving::BUnarchiveManager;
 
 
 class BArchivable {