diff --git a/volia/clustering.py b/volia/clustering.py
index 1dfae8a..9d8e5c9 100644
--- a/volia/clustering.py
+++ b/volia/clustering.py
@@ -138,7 +138,7 @@ def kmeans_run(features: str,
             mkdir(output)
         for k in klist:
             k = int(k)
-            fit_model(k, path.join(output, "clustering_" + str(i) + ".pkl"))
+            fit_model(k, path.join(output, "clustering_" + str(k) + ".pkl"))
 
     print(json.dumps(json_content))