diff --git a/tests/python_client/testcases/test_collection.py b/tests/python_client/testcases/test_collection.py
index dc0ca32379..bdf2ebe70f 100644
--- a/tests/python_client/testcases/test_collection.py
+++ b/tests/python_client/testcases/test_collection.py
@@ -841,7 +841,7 @@ class TestCollectionParams(TestcaseBase):
         c_name = cf.gen_unique_str(prefix)
         float_vec_field = cf.gen_float_vec_field(dim=dim)
         schema = cf.gen_collection_schema(fields=[cf.gen_int64_field(is_primary=True), float_vec_field])
-        error = {ct.err_code: 1, ct.err_msg: "invalid dimension: {}. should be in range 1 ~ 32768".format(dim)}
+        error = {ct.err_code: 65535, ct.err_msg: "invalid dimension: {}.".format(dim)}
         self.collection_wrap.init_collection(c_name, schema=schema, check_task=CheckTasks.err_res, check_items=error)
 
     @pytest.mark.tags(CaseLabel.L1)
diff --git a/tests/python_client/testcases/test_index.py b/tests/python_client/testcases/test_index.py
index 1279fda7e2..8c0e0541e1 100644
--- a/tests/python_client/testcases/test_index.py
+++ b/tests/python_client/testcases/test_index.py
@@ -1907,7 +1907,7 @@ class TestIndexDiskann(TestcaseBase):
                                                          "limit": default_limit})
 
     @pytest.mark.tags(CaseLabel.L2)
-    @pytest.mark.parametrize("dim", [1, 32768])
+    @pytest.mark.parametrize("dim", [ct.min_dim, ct.max_dim])
     def test_create_index_diskann_with_max_min_dim(self, dim):
         """
         target: test create index with diskann
@@ -2258,7 +2258,7 @@ class TestScaNNIndex(TestcaseBase):
                                   check_task=CheckTasks.err_res, check_items=error)
 
     @pytest.mark.tags(CaseLabel.L2)
-    @pytest.mark.parametrize("dim", [1, 127])
+    @pytest.mark.parametrize("dim", [3, 127])
     def test_create_scann_index_dim_invalid(self, dim):
         """
         target: test create scann index invalid