diff --git a/demos/notebooks/demo_pipeline.ipynb b/demos/notebooks/demo_pipeline.ipynb
index ce835e8b3..bda845f3f 100644
--- a/demos/notebooks/demo_pipeline.ipynb
+++ b/demos/notebooks/demo_pipeline.ipynb
@@ -179,7 +179,8 @@
     "                                                  q_max=99.5, \n",
     "                                                  fr=30, \n",
     "                                                  plot_text=True,\n",
-    "                                                  magnification=2)"
+    "                                                  magnification=2,\n",
+    "                                                  backend='opencv')"
    ]
   },
   {