diff --git a/scripts/upgrade b/scripts/upgrade
index 310339d..2079697 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -7,6 +7,7 @@
 #=================================================
 
 source _common.sh
+source ynh_add_config
 source /usr/share/yunohost/helpers
 
 #=================================================
@@ -105,7 +106,7 @@ then
 	# Create a temporary directory
 	tmpdir="$(mktemp -d)"
 	
-		# Copy the admin saved settings from tmp directory to final path	
+	# Copy the admin saved settings from tmp directory to final path	
 	cp -ar "$final_path/config.production.json" "$tmpdir/config.production.json"	
 
 	# Backup the content folder to the temp dir