diff --git a/internal/proxy/search_util.go b/internal/proxy/search_util.go
index c4e4b992fb771..e717416eab175 100644
--- a/internal/proxy/search_util.go
+++ b/internal/proxy/search_util.go
@@ -103,7 +103,7 @@ func parseSearchIteratorV2Info(searchParamsPair []*commonpb.KeyValuePair, groupB
 	}
 
 	// parse token, generate if not exist
-	token, _ := funcutil.GetAttrByKeyFromRepeatedKV(SearchIterTokenKey, searchParamsPair)
+	token, _ := funcutil.GetAttrByKeyFromRepeatedKV(SearchIterIdKey, searchParamsPair)
 	if token == "" {
 		generatedToken, err := uuid.NewRandom()
 		if err != nil {
diff --git a/internal/proxy/task.go b/internal/proxy/task.go
index 42ebc280fa3ce..51c8d4c758bdd 100644
--- a/internal/proxy/task.go
+++ b/internal/proxy/task.go
@@ -70,7 +70,7 @@ const (
 	SearchIterV2Key        = "search_iter_v2"
 	SearchIterBatchSizeKey = "search_iter_batch_size"
 	SearchIterLastBoundKey = "search_iter_last_bound"
-	SearchIterTokenKey     = "search_iter_token"
+	SearchIterIdKey        = "search_iter_id"
 
 	InsertTaskName                = "InsertTask"
 	CreateCollectionTaskName      = "CreateCollectionTask"
diff --git a/internal/proxy/task_search_test.go b/internal/proxy/task_search_test.go
index 686884a8cc9fb..aff17affd3af7 100644
--- a/internal/proxy/task_search_test.go
+++ b/internal/proxy/task_search_test.go
@@ -2780,7 +2780,7 @@ func TestTaskSearch_parseSearchInfo(t *testing.T) {
 		t.Run("iteratorV2 invalid token", func(t *testing.T) {
 			param := generateValidParamsForSearchIteratorV2()
 			param = append(param, &commonpb.KeyValuePair{
-				Key:   SearchIterTokenKey,
+				Key:   SearchIterIdKey,
 				Value: "invalid_token",
 			})
 			searchInfo := parseSearchInfo(param, nil, nil)
@@ -2793,7 +2793,7 @@ func TestTaskSearch_parseSearchInfo(t *testing.T) {
 			assert.NoError(t, err)
 			param := generateValidParamsForSearchIteratorV2()
 			param = append(param, &commonpb.KeyValuePair{
-				Key:   SearchIterTokenKey,
+				Key:   SearchIterIdKey,
 				Value: token.String(),
 			})
 			searchInfo := parseSearchInfo(param, nil, nil)