diff --git a/toolbox/fs_spec.cpp b/toolbox/fs_spec.cpp
index 7a8020e..1e0ae16 100644
--- a/toolbox/fs_spec.cpp
+++ b/toolbox/fs_spec.cpp
@@ -5,6 +5,8 @@
 
 namespace OS {
 
+	const int RootPathID = 2;
+
 	std::deque<FSSpecManager::Entry> FSSpecManager::_pathQueue;
 
 	void FSSpecManager::Init()
@@ -49,7 +51,9 @@ namespace OS {
 
 		Init();
 
-		int i = 1;
+		// this only works well for a small number of directories,
+		// which should be the common case.
+		int i = RootPathID;
 		for (const auto &e : _pathQueue)
 		{
 			if (e.hash == hash && e.path == path) return i;
@@ -82,7 +86,7 @@ namespace OS {
 
 		Init();
 
-		int i = 1;
+		int i = RootPathID;
 		for (const auto &e : _pathQueue)
 		{
 			if (e.hash == hash && e.path == path) return i;
@@ -102,10 +106,11 @@ namespace OS {
 
 		Init();
 
-		if (id < 1) return NullString;
-		if (id > _pathQueue.size()) return NullString;
+		id -= RootPathID;
+		if (id < 0) return NullString;
+		if (id >= _pathQueue.size()) return NullString;
 
-		return _pathQueue[id - 1].path;
+		return _pathQueue[id].path;
 	}
 
 	std::string FSSpecManager::ExpandPath(const std::string &path, int32_t id)