diff --git a/include/Nazara/Core/Thread.hpp b/include/Nazara/Core/Thread.hpp
index c86687cd5..496f44e23 100644
--- a/include/Nazara/Core/Thread.hpp
+++ b/include/Nazara/Core/Thread.hpp
@@ -22,8 +22,6 @@ class NAZARA_API NzThread : NzNonCopyable
 			friend NzThread;
 
 			public:
-				Id() = default;
-
 				NAZARA_API friend bool operator==(const Id& lhs, const Id& rhs);
 				NAZARA_API friend bool operator!=(const Id& lhs, const Id& rhs);
 				NAZARA_API friend bool operator<(const Id& lhs, const Id& rhs);
@@ -39,7 +37,7 @@ class NAZARA_API NzThread : NzNonCopyable
 				NzThreadImpl* m_id = nullptr;
 		};
 
-		NzThread() = default;
+		NzThread();
 		template<typename F> NzThread(F function);
 		template<typename F, typename... Args> NzThread(F function, Args... args);
 		template<typename C> NzThread(void (C::*function)(), C* object);
@@ -59,7 +57,7 @@ class NAZARA_API NzThread : NzNonCopyable
 	private:
 		void CreateImpl(NzFunctor* functor);
 
-		NzThreadImpl* m_impl = nullptr;
+		NzThreadImpl* m_impl;
 };
 
 #include <Nazara/Core/Thread.inl>
diff --git a/src/Nazara/Core/Thread.cpp b/src/Nazara/Core/Thread.cpp
index 8c75ff068..2496c025e 100644
--- a/src/Nazara/Core/Thread.cpp
+++ b/src/Nazara/Core/Thread.cpp
@@ -2,8 +2,6 @@
 // This file is part of the "Nazara Engine - Core module"
 // For conditions of distribution and use, see copyright notice in Config.hpp
 
-// Inspiré du code de la SFML par Laurent Gomila
-
 #include <Nazara/Core/Thread.hpp>
 #include <Nazara/Core/Config.hpp>
 #include <Nazara/Core/Error.hpp>
@@ -20,7 +18,7 @@
 
 #include <Nazara/Core/Debug.hpp>
 
-///********************************NzThread::Id********************************
+/*********************************NzThread::Id********************************/
 
 bool operator==(const NzThread::Id& lhs, const NzThread::Id& rhs)
 {
@@ -63,7 +61,12 @@ m_id(thread)
 {
 }
 
-///**********************************NzThread**********************************
+/***********************************NzThread**********************************/
+
+NzThread::NzThread() :
+m_impl(nullptr)
+{
+}
 
 NzThread::NzThread(NzThread&& other) :
 m_impl(other.m_impl)