diff --git a/scripts/upgrade b/scripts/upgrade
index 4479d07..89d24cb 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -9,6 +9,8 @@
 source _common.sh
 source /usr/share/yunohost/helpers
 
+timezone="$(cat /etc/timezone)"
+
 #=================================================
 # CHECK VERSION
 #=================================================