diff --git a/concha/contact_clustering.ipynb b/concha/contact_clustering.ipynb
index 818dfc190f3eac2386c4497a7242c5a31e716af1..a930724261fd7dff5e7ce715221ba4d9f5c04f0a 100644
--- a/concha/contact_clustering.ipynb
+++ b/concha/contact_clustering.ipynb
@@ -188,8 +188,6 @@
     "#### Results visualization\n",
     "\n",
     "Clustering partition visualized on the 2-dimensional UMAP space. This illustrates the repartition of conformations among clusters and their corresponding occupancy. By looking at the number of connected components in the space, the minimum cluster size might be re-calibrated. Note that unclassified points appear in gray.\n",
-    "\n",
-    "The function ```plot_2umap``` is documented in the notebook [utils](utils.ipynb)."
    ]
   },
   {