diff --git a/src/UserData/UserDataStorage.cpp b/src/UserData/UserDataStorage.cpp
index 466ae94..73bc099 100644
--- a/src/UserData/UserDataStorage.cpp
+++ b/src/UserData/UserDataStorage.cpp
@@ -3,4 +3,5 @@
 
 namespace Porygon::UserData {
     UserDataStorage::_internalDataStorage UserDataStorage::_internal = UserDataStorage::_internalDataStorage();
+    std::mutex UserDataStorage::_userDataMutex = std::mutex();
 }
\ No newline at end of file
diff --git a/src/UserData/UserDataStorage.hpp b/src/UserData/UserDataStorage.hpp
index a206c0a..c7bd012 100644
--- a/src/UserData/UserDataStorage.hpp
+++ b/src/UserData/UserDataStorage.hpp
@@ -12,7 +12,6 @@ namespace Porygon::UserData {
         class _internalDataStorage {
         public:
             std::unordered_map<uint32_t, UserData*> _userData;
-            std::mutex _userDataMutex;
 
             ~_internalDataStorage(){
                 for (auto u: _userData){
@@ -28,15 +27,16 @@ namespace Porygon::UserData {
         };
 
         static _internalDataStorage _internal;
+        static std::mutex _userDataMutex;
 
     public:
         static void RegisterType(uint32_t i, UserData *ud) {
-            std::lock_guard<std::mutex> guard(_internal._userDataMutex);
+            std::lock_guard<std::mutex> guard(_userDataMutex);
             UserDataStorage::_internal._userData.insert({i, ud});
         }
 
         static void ClearTypes(){
-            std::lock_guard<std::mutex> guard(_internal._userDataMutex);
+            std::lock_guard<std::mutex> guard(_userDataMutex);
             for (auto u: _internal._userData){
                 delete u.second;
             }