diff --git a/editor/scene_tree_dock.cpp b/editor/scene_tree_dock.cpp
index 87ef747a3..1a4069690 100644
--- a/editor/scene_tree_dock.cpp
+++ b/editor/scene_tree_dock.cpp
@@ -1196,7 +1196,7 @@ void SceneTreeDock::_tool_selected(int p_tool, bool p_confirm_override) {
 						continue;
 					}
 					StringName name = node->get_name();
-					if (new_unique_names.find(name) != -1 || get_tree()->get_edited_scene_root()->get_node_or_null(UNIQUE_NODE_PREFIX + String(name)) != nullptr) {
+					if (new_unique_names.find(name) != -1 || get_tree()->get_edited_scene_root()->get_node_or_null("%" + String(name)) != nullptr) {
 						cant_be_set_unique_names.push_back(name);
 					} else {
 						new_unique_nodes.push_back(node);