diff --git a/OptiScaler/Config.cpp b/OptiScaler/Config.cpp
index 8ffc4c0d..18ddd956 100644
--- a/OptiScaler/Config.cpp
+++ b/OptiScaler/Config.cpp
@@ -1048,7 +1048,7 @@ void Config::CheckUpscalerFiles()
     if (auto nvngxReplacement = Util::FindFilePath(Util::DllPath().remove_filename(), "nvngx_dlss.dll");
         nvngxReplacement.has_value())
     {
-        State::Instance().nvngxReplacement = nvngxReplacement.value().string();
+        State::Instance().nvngxReplacement = nvngxReplacement.value().wstring();
     }
 
     State::Instance().libxessExists = std::filesystem::exists(Util::ExePath().parent_path() / L"libxess.dll");
diff --git a/OptiScaler/State.h b/OptiScaler/State.h
index 0a6c2e01..d58bbd13 100644
--- a/OptiScaler/State.h
+++ b/OptiScaler/State.h
@@ -167,7 +167,7 @@ class State
     bool nvngxIniDetected = false;
 
     bool nvngxExists = false;
-    std::optional<std::string> nvngxReplacement = std::nullopt;
+    std::optional<std::wstring> nvngxReplacement = std::nullopt;
     bool libxessExists = false;
     bool fsrHooks = false;