diff --git a/src/core/file_sys/fs.cpp b/src/core/file_sys/fs.cpp
index 5f462937..f2fda657 100644
--- a/src/core/file_sys/fs.cpp
+++ b/src/core/file_sys/fs.cpp
@@ -64,8 +64,8 @@ std::filesystem::path MntPoints::GetHostPath(const std::string& guest_directory)
     while (!path_parts.empty()) {
         const auto& part = path_parts.back();
         const auto add_match = [&](const auto& host_part) {
-            current_path += host_part;
-            guest_path += part;
+            current_path /= host_part;
+            guest_path /= part;
             path_cache[guest_path] = current_path;
             path_parts.pop_back();
         };