diff --git a/uncrypt/uncrypt.cpp b/uncrypt/uncrypt.cpp
index 75595ac..f1f4f69 100644
--- a/uncrypt/uncrypt.cpp
+++ b/uncrypt/uncrypt.cpp
@@ -119,6 +119,9 @@
 
 #include "otautil/error_code.h"
 
+using android::fs_mgr::Fstab;
+using android::fs_mgr::ReadDefaultFstab;
+
 static constexpr int WINDOW_SIZE = 5;
 static constexpr int FIBMAP_RETRY_LIMIT = 3;