diff --git a/src/core/file_sys/fs.cpp b/src/core/file_sys/fs.cpp
index cabbcf8f5..8e6d74622 100644
--- a/src/core/file_sys/fs.cpp
+++ b/src/core/file_sys/fs.cpp
@@ -56,7 +56,8 @@ std::filesystem::path MntPoints::GetHostPath(std::string_view guest_directory, b
     const auto rel_path = std::string_view(corrected_path).substr(pos);
     std::filesystem::path host_path = mount->host_path / rel_path;
 
-    std::filesystem::path patch_path = mount->host_path.string() + "-UPDATE";
+    std::filesystem::path patch_path = mount->host_path;
+    patch_path += "-UPDATE";
     if (corrected_path.starts_with("/app0/") && std::filesystem::exists(patch_path / rel_path)) {
         host_path = patch_path / rel_path;
     }