diff --git a/repertory/librepertory/src/file_manager/open_file.cpp b/repertory/librepertory/src/file_manager/open_file.cpp
index ea9c9c64..1f7f9937 100644
--- a/repertory/librepertory/src/file_manager/open_file.cpp
+++ b/repertory/librepertory/src/file_manager/open_file.cpp
@@ -122,13 +122,14 @@ open_file::~open_file() { close(); }
 
 auto open_file::adjust_cache_size(std::uint64_t file_size, bool shrink)
     -> api_error {
+  REPERTORY_USES_FUNCTION_NAME();
 
   if (file_size == fsi_.size) {
     return api_error::success;
   }
 
   if (file_size > fsi_.size) {
-    auto size = file_size - file_size.value();
+    auto size = file_size - file_size;
     auto res = shrink ? cache_size_mgr::instance().shrink(size)
                       : cache_size_mgr::instance().expand(size);
     if (res == api_error::success) {
@@ -178,7 +179,7 @@ auto open_file::check_allocation() -> api_error {
   }
 
   file_lock.unlock();
-  res = adjust_cache_size(file_size.value(), true);
+  auto res = adjust_cache_size(file_size.value(), true);
   if (res != api_error::success) {
     return res;
   }