diff --git a/source/blender/editors/render/render_update.c b/source/blender/editors/render/render_update.c
index b8f64c1db58..badcfee0533 100644
--- a/source/blender/editors/render/render_update.c
+++ b/source/blender/editors/render/render_update.c
@@ -348,7 +348,6 @@ static void material_changed(Main *bmain, Material *ma)
 static void lamp_changed(Main *bmain, Lamp *la)
 {
 	Object *ob;
-	Material *ma;
 
 	/* icons */
 	BKE_icon_changed(BKE_icon_id_ensure(&la->id));
@@ -358,10 +357,6 @@ static void lamp_changed(Main *bmain, Lamp *la)
 		if (ob->data == la && ob->gpulamp.first)
 			GPU_lamp_free(ob);
 
-	for (ma = bmain->mat.first; ma; ma = ma->id.next)
-		if (ma->gpumaterial.first)
-			GPU_material_free(&ma->gpumaterial);
-
 	if (defmaterial.gpumaterial.first)
 		GPU_material_free(&defmaterial.gpumaterial);
 }