diff --git a/src/mfm.cpp b/src/mfm.cpp
index b458771e..df8c6ed3 100644
--- a/src/mfm.cpp
+++ b/src/mfm.cpp
@@ -76,6 +76,7 @@ mfm::main(int    argc_,
   auto a = std::filesystem::path("/a/b");
   auto b = std::filesystem::path("a/b");
   a = a.parent_path().parent_path();
+  b = b.parent_path().parent_path();
   fmt::println("{}\n{}",
                a == a.root_path(),
                b == b.root_path());