diff --git a/scripts/upgrade b/scripts/upgrade
index 806eae6..c152ce5 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -6,6 +6,7 @@
 # IMPORT GENERIC HELPERS
 #=================================================
 
+source _common.sh
 source /usr/share/yunohost/helpers
 
 #=================================================