diff --git a/include/Nazara/Utility/IndexMapper.hpp b/include/Nazara/Utility/IndexMapper.hpp
index ca253fb35..78ac2c652 100644
--- a/include/Nazara/Utility/IndexMapper.hpp
+++ b/include/Nazara/Utility/IndexMapper.hpp
@@ -20,7 +20,7 @@ class NAZARA_API NzIndexMapper
 {
 	public:
 		NzIndexMapper(NzIndexBuffer* indexBuffer, nzBufferAccess access = nzBufferAccess_ReadWrite);
-		NzIndexMapper(const NzIndexBuffer* indexBuffer);
+		NzIndexMapper(const NzIndexBuffer* indexBuffer, nzBufferAccess access = nzBufferAccess_ReadOnly);
 		NzIndexMapper(const NzSubMesh* subMesh);
 		~NzIndexMapper() = default;
 
diff --git a/src/Nazara/Utility/IndexMapper.cpp b/src/Nazara/Utility/IndexMapper.cpp
index 1668bd650..5107a20ab 100644
--- a/src/Nazara/Utility/IndexMapper.cpp
+++ b/src/Nazara/Utility/IndexMapper.cpp
@@ -75,8 +75,8 @@ m_mapper(indexBuffer, access)
 	}
 }
 
-NzIndexMapper::NzIndexMapper(const NzIndexBuffer* indexBuffer) :
-m_mapper(indexBuffer, nzBufferAccess_ReadOnly)
+NzIndexMapper::NzIndexMapper(const NzIndexBuffer* indexBuffer, nzBufferAccess access) :
+m_mapper(indexBuffer, access)
 {
 	if (indexBuffer && !indexBuffer->IsSequential())
 	{