diff --git a/lib/logvisor.cpp b/lib/logvisor.cpp
index 40a82aa..d953ba3 100644
--- a/lib/logvisor.cpp
+++ b/lib/logvisor.cpp
@@ -48,7 +48,9 @@ static Module Log("logvisor");
 static std::unordered_map<std::thread::id, const char*> ThreadMap;
 void RegisterThreadName(const char* name)
 {
+    auto lk = LockLog();
     ThreadMap[std::this_thread::get_id()] = name;
+    lk.unlock();
 #if __APPLE__
     pthread_setname_np(name);
 #elif __linux__