diff --git a/cocluto/cluster_stats.py b/cocluto/cluster_stats.py
index f8b7037..730fbd8 100644
--- a/cocluto/cluster_stats.py
+++ b/cocluto/cluster_stats.py
@@ -10,6 +10,7 @@ import colorsys
 # root@intranet:~# echo ~www-data
 # /var/www
 os.environ['MPLCONFIGDIR'] = "/tmp/cluster_stats"
+os.makedirs(os.environ['MPLCONFIGDIR'], exist_ok=True)
 
 import matplotlib
 # fix to TclError at /cluster/ClusterEvolution/