diff --git a/code/nel/include/nel/3d/dynamic_material.h b/code/nel/include/nel/3d/dynamic_material.h
index 92f25ebdd..6e3d24997 100644
--- a/code/nel/include/nel/3d/dynamic_material.h
+++ b/code/nel/include/nel/3d/dynamic_material.h
@@ -76,6 +76,7 @@ namespace NL3D
 	public:
 		CDynMaterial();
 		~CDynMaterial();
+		void clear();
 		void serial( NLMISC::IStream &f );
 		std::string getClassName(){ return "CDynMaterial"; }
 
diff --git a/code/nel/src/3d/dynamic_material.cpp b/code/nel/src/3d/dynamic_material.cpp
index 7d192c257..f12e245c1 100644
--- a/code/nel/src/3d/dynamic_material.cpp
+++ b/code/nel/src/3d/dynamic_material.cpp
@@ -150,6 +150,11 @@ namespace NL3D
 	}
 
 	CDynMaterial::~CDynMaterial()
+	{
+		clear();
+	}
+
+	void CDynMaterial::clear()
 	{
 		std::vector< SRenderPass* >::iterator itr = passes.begin();
 		while( itr != passes.end() )
diff --git a/code/nel/tools/3d/object_viewer_qt/src/plugins/material_editor/material_editor_window.cpp b/code/nel/tools/3d/object_viewer_qt/src/plugins/material_editor/material_editor_window.cpp
index 88da0791d..d72e7c7fa 100644
--- a/code/nel/tools/3d/object_viewer_qt/src/plugins/material_editor/material_editor_window.cpp
+++ b/code/nel/tools/3d/object_viewer_qt/src/plugins/material_editor/material_editor_window.cpp
@@ -81,7 +81,7 @@ namespace MaterialEditor
 	void MaterialEditorWindow::onNewMaterialClicked()
 	{
 		nl3dIface->newMaterial();
-		materialSplitter->onNewMaterial();
+		materialSplitter->onMaterialLoaded();
 		passesWidget->onMaterialLoaded();
 	}
 
diff --git a/code/nel/tools/3d/object_viewer_qt/src/plugins/material_editor/nel3d_interface.cpp b/code/nel/tools/3d/object_viewer_qt/src/plugins/material_editor/nel3d_interface.cpp
index 21b134a90..1efeac4f0 100644
--- a/code/nel/tools/3d/object_viewer_qt/src/plugins/material_editor/nel3d_interface.cpp
+++ b/code/nel/tools/3d/object_viewer_qt/src/plugins/material_editor/nel3d_interface.cpp
@@ -167,6 +167,7 @@ namespace MaterialEditor
 			return false;
 
 		newMaterial();
+		mat->clear();
 		mat->serial( xml );
 		file.close();
 
@@ -194,6 +195,7 @@ namespace MaterialEditor
 	{
 		delete mat;
 		mat = new NL3D::CDynMaterial();
+		
 	}
 
 	CNelMaterialProxy CNel3DInterface::getMaterial()