diff --git a/Source/Client/Session/Session.cpp b/Source/Client/Session/Session.cpp
index 9e6a9ece5..0a7847ba2 100644
--- a/Source/Client/Session/Session.cpp
+++ b/Source/Client/Session/Session.cpp
@@ -101,6 +101,11 @@ extern template void std::vector<std::string>::resize(size_type, const std::stri
 extern template void std::vector<unsigned char>::_Tidy() noexcept;
 extern template std::string& std::string::operator=(std::string&&) noexcept;
 
+using PendingActorNameTree = std::_Tree<std::_Tset_traits<
+  std::uint32_t, std::less<std::uint32_t>, std::allocator<std::uint32_t>, false>>;
+extern template std::_Tree_find_result<std::_Tree_node<std::uint32_t, void*>*>
+PendingActorNameTree::_Find_lower_bound<std::uint32_t>(const std::uint32_t&) const;
+
 // STATIC: 0x01732638
 // GLOBAL: gl_24474
 CSession g_session;