diff --git a/src/meshlabplugins/render_rm/glstateholder.h b/src/meshlabplugins/render_rm/glstateholder.h
index cf55f46f1..5bd977ec3 100644
--- a/src/meshlabplugins/render_rm/glstateholder.h
+++ b/src/meshlabplugins/render_rm/glstateholder.h
@@ -125,6 +125,7 @@ class GLStateHolder : public QObject
 		void VarDump();
 
 		int passNumber() { return passes.size(); }
+    inline void reset(){ needUpdateInGLMemory = true; };
 		void usePassProgram( int i ) { passes[i] -> useProgram(); }
 };
 
diff --git a/src/meshlabplugins/render_rm/rmmeshrender.cpp b/src/meshlabplugins/render_rm/rmmeshrender.cpp
index 4a9633f31..9fe131f1f 100644
--- a/src/meshlabplugins/render_rm/rmmeshrender.cpp
+++ b/src/meshlabplugins/render_rm/rmmeshrender.cpp
@@ -73,6 +73,7 @@ void RmMeshShaderRenderPlugin::Init(QAction *a, MeshModel &m, RenderMode &rm, QG
 	if (GLEW_OK == err) {
 		if (GLEW_ARB_vertex_program && GLEW_ARB_fragment_program) {
 
+      holder.reset();
 			dialog = new RmShaderDialog(&holder, parser, gla, rm);
 			dialog->move(10,100);
 			dialog->show();
@@ -90,7 +91,7 @@ void RmMeshShaderRenderPlugin::Render(QAction *a, MeshModel &m, RenderMode &rm,
 
 	if( holder.isSupported() ) {
 		qDebug() << "Render: " << a;
-		//holder.usePassProgram(0);
+		holder.usePassProgram(0);
 	}