diff --git a/tempo_embeddings/visualization/jscatter.py b/tempo_embeddings/visualization/jscatter.py
index 50ed8ca..0f7cf17 100644
--- a/tempo_embeddings/visualization/jscatter.py
+++ b/tempo_embeddings/visualization/jscatter.py
@@ -209,7 +209,7 @@ def _cluster_button(self) -> widgets.Button:
 
             # TODO: add selectors for clustering parameters
 
-            def cluster(button):
+            def cluster(button):  # pragma: no cover
                 # TODO: add clustering parameters
 
                 clusters = list(