diff --git a/08_collab.ipynb b/08_collab.ipynb
index 9c664a5..e384910 100644
--- a/08_collab.ipynb
+++ b/08_collab.ipynb
@@ -1702,7 +1702,6 @@
     "movie_w = learn.model.movie_factors[top_idxs].cpu().detach()\n",
     "movie_pca = movie_w.pca(3)\n",
     "fac0,fac1,fac2 = movie_pca.t()\n",
-    "idxs = np.random.choice(len(top_movies), 50, replace=False)\n",
     "idxs = list(range(50))\n",
     "X = fac0[idxs]\n",
     "Y = fac2[idxs]\n",