diff --git a/include/Nazara/Lua/LuaInstance.hpp b/include/Nazara/Lua/LuaInstance.hpp
index a5d631645..93374958b 100644
--- a/include/Nazara/Lua/LuaInstance.hpp
+++ b/include/Nazara/Lua/LuaInstance.hpp
@@ -25,10 +25,19 @@ namespace Nz
 			LuaInstance(LuaInstance&& instance) = default;
 			~LuaInstance();
 
+			inline std::size_t GetMemoryLimit() const;
+			inline std::size_t GetMemoryUsage() const;
+			inline UInt32 GetTimeLimit() const;
+
+			inline void SetMemoryLimit(std::size_t memoryLimit);
+			inline void SetTimeLimit(UInt32 limit);
+
 			LuaInstance& operator=(const LuaInstance&) = delete;
 			LuaInstance& operator=(LuaInstance&& instance) = default;
 
 		private:
+			inline void SetMemoryUsage(std::size_t memoryUsage);
+
 			static void* MemoryAllocator(void *ud, void *ptr, std::size_t osize, std::size_t nsize);
 			static void TimeLimiter(lua_State* internalState, lua_Debug* debug);
 
diff --git a/include/Nazara/Lua/LuaInstance.inl b/include/Nazara/Lua/LuaInstance.inl
index f4394eb6b..6752eb0e0 100644
--- a/include/Nazara/Lua/LuaInstance.inl
+++ b/include/Nazara/Lua/LuaInstance.inl
@@ -3,16 +3,34 @@
 // For conditions of distribution and use, see copyright notice in Config.hpp
 
 #include <Nazara/Lua/LuaInstance.hpp>
-#include <Nazara/Core/Algorithm.hpp>
-#include <Nazara/Core/Flags.hpp>
-#include <Nazara/Core/MemoryHelper.hpp>
-#include <Nazara/Core/StringStream.hpp>
-#include <Nazara/Math/Algorithm.hpp>
-#include <limits>
-#include <string>
-#include <vector>
-#include <type_traits>
+#include <Nazara/Lua/Debug.hpp>
 
 namespace Nz
 {
+	inline std::size_t LuaInstance::GetMemoryLimit() const
+	{
+		return m_memoryLimit;
+	}
+
+	inline std::size_t LuaInstance::GetMemoryUsage() const
+	{
+		return m_memoryUsage;
+	}
+
+	inline UInt32 LuaInstance::GetTimeLimit() const
+	{
+		return m_timeLimit;
+	}
+
+	inline void LuaInstance::SetMemoryLimit(std::size_t memoryLimit)
+	{
+		m_memoryLimit = m_memoryLimit;
+	}
+
+	inline void LuaInstance::SetTimeLimit(UInt32 limit)
+	{
+		m_timeLimit = limit;
+	}
 }
+
+#include <Nazara/Lua/DebugOff.hpp>
diff --git a/src/Nazara/Lua/LuaInstance.cpp b/src/Nazara/Lua/LuaInstance.cpp
index a0d5d3ff7..cd47ac5c7 100644
--- a/src/Nazara/Lua/LuaInstance.cpp
+++ b/src/Nazara/Lua/LuaInstance.cpp
@@ -12,6 +12,7 @@
 #include <Nazara/Core/MemoryHelper.hpp>
 #include <Nazara/Core/MemoryView.hpp>
 #include <Nazara/Core/StringStream.hpp>
+#include <cassert>
 #include <cstdlib>
 #include <stdexcept>
 #include <unordered_map>
@@ -48,15 +49,22 @@ namespace Nz
 			lua_close(m_state);
 	}
 
+	inline void LuaInstance::SetMemoryUsage(std::size_t memoryUsage)
+	{
+		m_memoryUsage = memoryUsage;
+	}
+
 	void* LuaInstance::MemoryAllocator(void* ud, void* ptr, std::size_t osize, std::size_t nsize)
 	{
 		LuaInstance* instance = static_cast<LuaInstance*>(ud);
-		std::size_t& memoryLimit = instance->m_memoryLimit;
-		std::size_t& memoryUsage = instance->m_memoryUsage;
+		std::size_t memoryLimit = instance->GetMemoryLimit();
+		std::size_t memoryUsage = instance->GetMemoryUsage();
 
 		if (nsize == 0)
 		{
-			memoryUsage -= osize;
+			assert(memoryUsage >= osize);
+
+			instance->SetMemoryUsage(memoryUsage - osize);
 			std::free(ptr);
 
 			return nullptr;
@@ -73,7 +81,7 @@ namespace Nz
 				return nullptr;
 			}
 
-			memoryUsage = usage;
+			instance->SetMemoryUsage(usage);
 
 			return std::realloc(ptr, nsize);
 		}
@@ -86,7 +94,7 @@ namespace Nz
 		LuaInstance* instance;
 		lua_getallocf(internalState, reinterpret_cast<void**>(&instance));
 
-		if (instance->m_clock.GetMilliseconds() > instance->m_timeLimit)
+		if (instance->m_clock.GetMilliseconds() > instance->GetTimeLimit())
 			luaL_error(internalState, "maximum execution time exceeded");
 	}
 }