diff --git a/include/Nazara/Utility/VertexMapper.hpp b/include/Nazara/Utility/VertexMapper.hpp
index 4b76aa9ca..533a1e9c1 100644
--- a/include/Nazara/Utility/VertexMapper.hpp
+++ b/include/Nazara/Utility/VertexMapper.hpp
@@ -13,7 +13,6 @@
 #include <Nazara/Utility/Enums.hpp>
 
 class NzSubMesh;
-class NzVertexBuffer;
 
 class NzVertexMapperImpl;
 
@@ -34,6 +33,8 @@ class NAZARA_API NzVertexMapper
 		void SetTangent(unsigned int i, const NzVector3f& tangent);
 		void SetTexCoords(unsigned int i, const NzVector2f& texCoords);
 
+		void Unmap();
+
 	private:
 		NzVertexMapperImpl* m_impl;
 };
diff --git a/src/Nazara/Utility/VertexMapper.cpp b/src/Nazara/Utility/VertexMapper.cpp
index 36ccf9915..e0504b764 100644
--- a/src/Nazara/Utility/VertexMapper.cpp
+++ b/src/Nazara/Utility/VertexMapper.cpp
@@ -323,3 +323,9 @@ void NzVertexMapper::SetTexCoords(unsigned int i, const NzVector2f& texCoords)
 {
 	m_impl->SetTexCoords(i, texCoords);
 }
+
+void NzVertexMapper::Unmap()
+{
+	delete m_impl;
+	m_impl = nullptr;
+}