diff --git a/frontend/src/business/components/common/select-tree/SelectTree.vue b/frontend/src/business/components/common/select-tree/SelectTree.vue
index 87905ac11d..2aeed0ce70 100644
--- a/frontend/src/business/components/common/select-tree/SelectTree.vue
+++ b/frontend/src/business/components/common/select-tree/SelectTree.vue
@@ -403,7 +403,7 @@ export default {
     filterNode(value, data) {
       if (!value) return true;
       if (data.label) {
-        return data.label.indexOf(value.toLowerCase()) !== -1;
+        return data.label.toLowerCase().indexOf(value.toLowerCase()) !== -1;
       }
       return false;
     },