diff --git a/source/fssystem/fssystem_directory_savedata_filesystem.cpp b/source/fssystem/fssystem_directory_savedata_filesystem.cpp
index c7d7530b..1be30c3f 100644
--- a/source/fssystem/fssystem_directory_savedata_filesystem.cpp
+++ b/source/fssystem/fssystem_directory_savedata_filesystem.cpp
@@ -74,13 +74,13 @@ namespace ams::fssystem {
     }
 
     DirectorySaveDataFileSystem::DirectorySaveDataFileSystem(std::shared_ptr<fs::fsa::IFileSystem> fs)
-        : PathResolutionFileSystem(fs)
+        : PathResolutionFileSystem(fs), open_writable_files(0)
     {
         /* ... */
     }
 
     DirectorySaveDataFileSystem::DirectorySaveDataFileSystem(std::unique_ptr<fs::fsa::IFileSystem> fs)
-        : PathResolutionFileSystem(std::forward<std::unique_ptr<fs::fsa::IFileSystem>>(fs))
+        : PathResolutionFileSystem(std::forward<std::unique_ptr<fs::fsa::IFileSystem>>(fs)), open_writable_files(0)
     {
         /* ... */
     }