diff --git a/pkg/agent/core/ngt/handler/grpc/index.go b/pkg/agent/core/ngt/handler/grpc/index.go
index 97380baa496..6be641e5015 100644
--- a/pkg/agent/core/ngt/handler/grpc/index.go
+++ b/pkg/agent/core/ngt/handler/grpc/index.go
@@ -50,8 +50,8 @@ func (s *server) CreateIndex(ctx context.Context, c *payload.Control_CreateIndex
 				&errdetails.PreconditionFailure{
 					Violations: []*errdetails.PreconditionFailureViolation{
 						{
-							Type:    "uncommited index is empty",
-							Subject: "failed to CreateIndex operation caused by empty uncommited indices",
+							Type:    "uncommitted index is empty",
+							Subject: "failed to CreateIndex operation caused by empty uncommitted indices",
 						},
 					},
 				}, info.Get())
@@ -125,8 +125,8 @@ func (s *server) CreateAndSaveIndex(ctx context.Context, c *payload.Control_Crea
 				&errdetails.PreconditionFailure{
 					Violations: []*errdetails.PreconditionFailureViolation{
 						{
-							Type:    "uncommited index is empty",
-							Subject: "failed to CreateAndSaveIndex operation caused by empty uncommited indices",
+							Type:    "uncommitted index is empty",
+							Subject: "failed to CreateAndSaveIndex operation caused by empty uncommitted indices",
 						},
 					},
 				}, info.Get())
@@ -153,7 +153,7 @@ func (s *server) CreateAndSaveIndex(ctx context.Context, c *payload.Control_Crea
 }
 
 func (s *server) IndexInfo(ctx context.Context, _ *payload.Empty) (res *payload.Info_Index_Count, err error) {
-	ctx, span := trace.StartSpan(ctx, apiName+".IndexInfo")
+	_, span := trace.StartSpan(ctx, apiName+".IndexInfo")
 	defer func() {
 		if span != nil {
 			span.End()
diff --git a/pkg/agent/core/ngt/handler/grpc/remove.go b/pkg/agent/core/ngt/handler/grpc/remove.go
index cc25e096a75..a1209830f4f 100644
--- a/pkg/agent/core/ngt/handler/grpc/remove.go
+++ b/pkg/agent/core/ngt/handler/grpc/remove.go
@@ -33,7 +33,7 @@ import (
 )
 
 func (s *server) Remove(ctx context.Context, req *payload.Remove_Request) (res *payload.Object_Location, err error) {
-	ctx, span := trace.StartSpan(ctx, apiName+".Remove")
+	_, span := trace.StartSpan(ctx, apiName+".Remove")
 	defer func() {
 		if span != nil {
 			span.End()
@@ -169,7 +169,7 @@ func (s *server) StreamRemove(stream vald.Remove_StreamRemoveServer) (err error)
 }
 
 func (s *server) MultiRemove(ctx context.Context, reqs *payload.Remove_MultiRequest) (res *payload.Object_Locations, err error) {
-	ctx, span := trace.StartSpan(ctx, apiName+".MultiRemove")
+	_, span := trace.StartSpan(ctx, apiName+".MultiRemove")
 	defer func() {
 		if span != nil {
 			span.End()
diff --git a/pkg/agent/core/ngt/handler/grpc/update_test.go b/pkg/agent/core/ngt/handler/grpc/update_test.go
index 6387b386842..5d3c27a2f08 100644
--- a/pkg/agent/core/ngt/handler/grpc/update_test.go
+++ b/pkg/agent/core/ngt/handler/grpc/update_test.go
@@ -157,7 +157,7 @@ func Test_server_Update(t *testing.T) {
 			- case 6.2: success update with one min value vector (type: float32)
 			- case 7.1: success update with one max value vector (type: uint8)
 			- case 7.2: success update with one max value vector (type: float32)
-			- case 8.1: success update with one NaN value vector (type: float32) // NOTE: To fix it, it is necessarry to check all of vector value
+			- case 8.1: success update with one NaN value vector (type: float32) // NOTE: To fix it, it is necessary to check all of vector value
 			- case 9.1: success update with one +inf value vector (type: float32)
 			- case 9.2: success update with one -inf value vector (type: float32)
 			- case 10.1: fail update with one nil vector