diff --git a/scripts/upgrade b/scripts/upgrade
index 8b04d48..a083803 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -63,9 +63,8 @@ then
 
 	pushd $install_dir
 		chown -R $app:www-data "$install_dir"
-		
+		ynh_exec_warn_less ynh_exec_as $app git config --global --add safe.directory "$install_dir"
 		ynh_exec_warn_less ynh_exec_as $app git fetch
-    	#git checkout master
     	ynh_exec_warn_less ynh_exec_as $app git pull
 	popd
 fi