diff --git a/scripts/upgrade b/scripts/upgrade
index 80db284..53fef36 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -23,8 +23,8 @@ ynh_systemd_action --service_name="$app" --action="stop" --log_path="systemd"
 #=================================================
 ynh_script_progression --message="Ensuring downward compatibility..." --weight=1
 
-if [ -d "$data_dir/logs" ]; then
-    ynh_secure_remove --file="/var/log/$app"
+if [ ! -L "$data_dir/logs" ]; then
+    ynh_secure_remove --file="$data_dir/logs"
     ln -s "/var/log/$app" "$data_dir/logs"
 fi