diff --git a/include/IUserData.h b/include/IUserData.h
index 05ab632f..26725730 100644
--- a/include/IUserData.h
+++ b/include/IUserData.h
@@ -29,12 +29,6 @@ namespace io
 				return getType() == other.getType();
 			}
 			
-			//! Writes data attributes
-			virtual void serializeAttributes(io::IAttributes* out, io::SAttributeReadWriteOptions* options=0) const {}
-
-			//! Reads data attributes
-			virtual void deserializeAttributes(io::IAttributes* in, io::SAttributeReadWriteOptions* options=0) {}
-
 			//! Used internally by Irrlicht to check if data has changed
 			bool operator!=(const IUserData& other) const
 			{
diff --git a/source/Irrlicht/CNullDriver.cpp b/source/Irrlicht/CNullDriver.cpp
index c2238eee..dbb9dcfb 100644
--- a/source/Irrlicht/CNullDriver.cpp
+++ b/source/Irrlicht/CNullDriver.cpp
@@ -2164,9 +2164,6 @@ io::IAttributes* CNullDriver::createAttributesFromMaterial(const video::SMateria
 	attr->addFloat("PolygonOffsetDepthBias", material.PolygonOffsetDepthBias);
 	attr->addFloat("PolygonOffsetSlopeScale", material.PolygonOffsetSlopeScale);
 
-	if ( material.UserData )
-		material.UserData->serializeAttributes(attr, options);
-
 	// TODO: Would be nice to have a flag that only serializes rest of texture data when a texture pointer exists.
 	prefix = "BilinearFilter";
 	for (i=0; i<MATERIAL_MAX_TEXTURES; ++i)
@@ -2252,9 +2249,6 @@ void CNullDriver::fillMaterialStructureFromAttributes(video::SMaterial& outMater
 	outMaterial.PolygonOffsetDepthBias = attr->getAttributeAsFloat("PolygonOffsetDepthBias", outMaterial.PolygonOffsetDepthBias);
 	outMaterial.PolygonOffsetSlopeScale = attr->getAttributeAsFloat("PolygonOffsetSlopeScale", outMaterial.PolygonOffsetSlopeScale);
 
-	if ( outMaterial.UserData )
-		outMaterial.UserData->deserializeAttributes(attr);
-
 	prefix = "BilinearFilter";
 	if (attr->existsAttribute(prefix.c_str())) // legacy
 		outMaterial.setFlag(EMF_BILINEAR_FILTER, attr->getAttributeAsBool(prefix.c_str()));