diff --git a/source/blender/editors/render/render_shading.c b/source/blender/editors/render/render_shading.c
index 3f7e30f9e41..24b521dcabc 100644
--- a/source/blender/editors/render/render_shading.c
+++ b/source/blender/editors/render/render_shading.c
@@ -296,6 +296,7 @@ static int material_slot_remove_exec(bContext *C, wmOperator *op)
 	}
 
 	object_remove_material_slot(ob);
+	DAG_id_tag_update(&ob->id, OB_RECALC_DATA);
 	WM_event_add_notifier(C, NC_OBJECT|ND_DRAW, ob);
 	WM_event_add_notifier(C, NC_OBJECT|ND_OB_SHADING, ob);