diff --git a/code/nel/include/nel/3d/dynamic_material.h b/code/nel/include/nel/3d/dynamic_material.h
index 4e07443d3..bc89a88a2 100644
--- a/code/nel/include/nel/3d/dynamic_material.h
+++ b/code/nel/include/nel/3d/dynamic_material.h
@@ -81,6 +81,7 @@ namespace NL3D
 	public:
 		CDynMaterial();
 		~CDynMaterial();
+		void reconstruct();
 		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 3ef282b26..7202f9a05 100644
--- a/code/nel/src/3d/dynamic_material.cpp
+++ b/code/nel/src/3d/dynamic_material.cpp
@@ -150,9 +150,7 @@ namespace NL3D
 
 	CDynMaterial::CDynMaterial()
 	{
-		SRenderPass *p = new SRenderPass();
-		p->setName( "pass1" );
-		passes.push_back( p );
+		reconstruct();
 	}
 
 	CDynMaterial::~CDynMaterial()
@@ -160,6 +158,14 @@ namespace NL3D
 		clear();
 	}
 
+	void CDynMaterial::reconstruct()
+	{
+		clear();
+		SRenderPass *p = new SRenderPass();
+		p->setName( "pass1" );
+		passes.push_back( p );
+	}
+
 	void CDynMaterial::clear()
 	{
 		std::vector< SRenderPass* >::iterator itr = passes.begin();
diff --git a/code/nel/src/3d/material.cpp b/code/nel/src/3d/material.cpp
index deb447d2c..0a16687c8 100644
--- a/code/nel/src/3d/material.cpp
+++ b/code/nel/src/3d/material.cpp
@@ -641,6 +641,8 @@ void CMaterial::createDynMat()
 {
 	if( dynMat == NULL )
 		dynMat = new CDynMaterial();
+	else
+		dynMat->reconstruct();
 
 	SRenderPass *p = dynMat->getPass( 0 );