diff --git a/branches/1stNUP_1_5_CUP/sources/common/FileTransfer.cpp b/branches/1stNUP_1_5_CUP/sources/common/FileTransfer.cpp
index 227b7d8..5474037 100644
--- a/branches/1stNUP_1_5_CUP/sources/common/FileTransfer.cpp
+++ b/branches/1stNUP_1_5_CUP/sources/common/FileTransfer.cpp
@@ -805,7 +805,8 @@ nn::Result CalculateFileSizeRecursively(std::wstring currentDirectory, s64& file
         // ディレクトリの場合
         if (entry.attributes.isDirectory)
         {
-            return CalculateFileSizeRecursively(currentDirectory + std::wstring(entry.entryName) + std::wstring(L"/"), fileSize);
+            result = CalculateFileSizeRecursively(currentDirectory + std::wstring(entry.entryName) + std::wstring(L"/"), fileSize);
+            NN_UTIL_RETURN_IF_FAILED(result);
         }
         // ファイルの場合
         else