diff --git a/src/lib/tls/tls_session_manager_memory.cpp b/src/lib/tls/tls_session_manager_memory.cpp
index a9cb797c2d2..e0f9c5246c6 100644
--- a/src/lib/tls/tls_session_manager_memory.cpp
+++ b/src/lib/tls/tls_session_manager_memory.cpp
@@ -12,7 +12,6 @@
 #include <botan/internal/stl_util.h>
 
 #include <algorithm>
-#include <ranges>
 
 namespace Botan::TLS {
 
@@ -68,7 +67,7 @@ std::vector<Session_with_Handle> Session_Manager_In_Memory::find_some(const Serv
    lock_guard_type<recursive_mutex_type> lk(mutex());
 
    std::vector<Session_with_Handle> found_sessions;
-   auto t = m_sessions | std::views::values;
+   auto t = m_sessions | std::views::transform([](const auto& e) { return e.second; });
    std::copy_if(t.begin(), t.end(), std::back_inserter(found_sessions), [&](const auto& e) {
       return e.session.server_info() == info;
    });