diff --git a/Mapping/kmeans_clustering/kmeans_clustering.py b/Mapping/kmeans_clustering/kmeans_clustering.py
index 984b5565..8edfa11e 100644
--- a/Mapping/kmeans_clustering/kmeans_clustering.py
+++ b/Mapping/kmeans_clustering/kmeans_clustering.py
@@ -73,7 +73,7 @@ def update_clusters(clusters):
         mind = min(dlist)
         min_id = dlist.index(mind)
         clusters.labels[ip] = min_id
-        cost += min_id
+        cost += mind
 
     return clusters, cost