diff --git a/src/Nazara/Renderer/RenderWindow.cpp b/src/Nazara/Renderer/RenderWindow.cpp
index 367399c09..736cadffb 100644
--- a/src/Nazara/Renderer/RenderWindow.cpp
+++ b/src/Nazara/Renderer/RenderWindow.cpp
@@ -14,28 +14,14 @@
 
 NzRenderWindow::NzRenderWindow(NzVideoMode mode, const NzString& title, nzUInt32 style, const NzContextParameters& parameters)
 {
+	NzErrorFlags flags(nzErrorFlag_ThrowException, true);
 	Create(mode, title, style, parameters);
-
-	#ifdef NAZARA_DEBUG
-	if (!m_impl)
-	{
-		NazaraError("Failed to create render window");
-		throw std::runtime_error("Constructor failed");
-	}
-	#endif
 }
 
 NzRenderWindow::NzRenderWindow(NzWindowHandle handle, const NzContextParameters& parameters)
 {
+	NzErrorFlags flags(nzErrorFlag_ThrowException, true);
 	Create(handle, parameters);
-
-	#ifdef NAZARA_DEBUG
-	if (!m_impl)
-	{
-		NazaraError("Failed to create render window");
-		throw std::runtime_error("Constructor failed");
-	}
-	#endif
 }
 
 NzRenderWindow::~NzRenderWindow()
diff --git a/src/Nazara/Utility/Buffer.cpp b/src/Nazara/Utility/Buffer.cpp
index 6bf62d6d0..18d4e0583 100644
--- a/src/Nazara/Utility/Buffer.cpp
+++ b/src/Nazara/Utility/Buffer.cpp
@@ -4,6 +4,7 @@
 
 #include <Nazara/Utility/Buffer.hpp>
 #include <Nazara/Core/Error.hpp>
+#include <Nazara/Core/ErrorFlags.hpp>
 #include <Nazara/Utility/AbstractBuffer.hpp>
 #include <Nazara/Utility/BufferMapper.hpp>
 #include <Nazara/Utility/Config.hpp>
@@ -32,15 +33,8 @@ NzBuffer::NzBuffer(nzBufferType type, unsigned int size, nzBufferStorage storage
 m_type(type),
 m_impl(nullptr)
 {
+	NzErrorFlags flags(nzErrorFlag_ThrowException, true);
 	Create(size, storage, usage);
-
-	#ifdef NAZARA_DEBUG
-	if (!m_impl)
-	{
-		NazaraError("Failed to create buffer");
-		throw std::runtime_error("Constructor failed");
-	}
-	#endif
 }
 
 NzBuffer::~NzBuffer()
diff --git a/src/Nazara/Utility/Window.cpp b/src/Nazara/Utility/Window.cpp
index 00b01a0f5..d9780579e 100644
--- a/src/Nazara/Utility/Window.cpp
+++ b/src/Nazara/Utility/Window.cpp
@@ -45,15 +45,8 @@ m_waitForEvent(false)
 m_impl(nullptr)
 #endif
 {
+	NzErrorFlags flags(nzErrorFlag_ThrowException, true);
 	Create(mode, title, style);
-
-	#ifdef NAZARA_DEBUG
-	if (!m_impl)
-	{
-		NazaraError("Failed to create window");
-		throw std::runtime_error("Constructor failed");
-	}
-	#endif
 }
 
 NzWindow::NzWindow(NzWindowHandle handle) :
@@ -65,15 +58,8 @@ m_waitForEvent(false)
 m_impl(nullptr)
 #endif
 {
+	NzErrorFlags flags(nzErrorFlag_ThrowException, true);
 	Create(handle);
-
-	#ifdef NAZARA_DEBUG
-	if (!m_impl)
-	{
-		NazaraError("Failed to create window");
-		throw std::runtime_error("Constructor failed");
-	}
-	#endif
 }
 
 NzWindow::~NzWindow()