diff --git a/scripts/upgrade b/scripts/upgrade
index 34f3c4e..3d2f360 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -54,7 +54,7 @@ if [ -f "$install_dir/data/config.local.user.php" ]; then
 	ynh_secure_remove "$install_dir/data/config.local.user.php"
 fi
 
-if [ -f "$install_dir/data/data" ]; then
+if [ -d "$install_dir/data/data" ]; then
 	ynh_secure_remove "$install_dir/data/data"
 fi