diff --git a/lib/create-clusters.js b/lib/create-clusters.js
index <HASH>..<HASH> 100644
--- a/lib/create-clusters.js
+++ b/lib/create-clusters.js
@@ -8,6 +8,7 @@ function createClusters(selection, g) {
       svgClusters = selection.selectAll("g.cluster")
         .data(clusters, function(v) { return v; });
 
+  svgClusters.selectAll("*").remove();
   svgClusters.enter()
     .append("g")
       .attr("class", "cluster")
Remove contents of cluster on change

Fixes #<I>