diff --git a/python_apps/airtime_analyzer/install/upstart/airtime_analyzer.conf b/python_apps/airtime_analyzer/install/upstart/airtime_analyzer.conf
index 03bba725c..6fccc21c9 100644
--- a/python_apps/airtime_analyzer/install/upstart/airtime_analyzer.conf
+++ b/python_apps/airtime_analyzer/install/upstart/airtime_analyzer.conf
@@ -6,5 +6,8 @@ stop on runlevel [!2345]
 
 respawn
 
+env LANG='en_US.UTF-8'
+env LC_ALL='en_US.UTF-8'
+
 exec su www-data -c "airtime_analyzer"