diff --git a/tests/testcases/test_restore_backup.py b/tests/testcases/test_restore_backup.py
index 5d2785ba..30f77c8f 100644
--- a/tests/testcases/test_restore_backup.py
+++ b/tests/testcases/test_restore_backup.py
@@ -995,7 +995,7 @@ def test_milvus_restore_back_with_sparse_vector_text_match_datatype(self, includ
             )
             assert len(res) == 1
             for r in res:
-                assert token in r["text"]
+                assert token.lower() in r["text"].lower()
         if enable_full_text_search:
             search_data = [fake_en.text()+f" {token} "]
             res = c.search(