diff --git a/debian/phosh.service b/debian/phosh.service
index 9e0e37560b27814fe336983b4077ffad4780d1fa..2175af74460eaa699e440b4ede5cfbef176f3e44 100644
--- a/debian/phosh.service
+++ b/debian/phosh.service
@@ -25,6 +25,7 @@ Before=graphical.target
 ConditionPathExists=/dev/tty0
 
 [Service]
+Environment=LANG=C.UTF-8
 ExecStart=/usr/bin/phosh
 TimeoutStartSec=60
 User=purism