diff --git a/pkg/services/object/acl/eacl/v2/headers.go b/pkg/services/object/acl/eacl/v2/headers.go
index 63e733cf6d..736c057637 100644
--- a/pkg/services/object/acl/eacl/v2/headers.go
+++ b/pkg/services/object/acl/eacl/v2/headers.go
@@ -101,96 +101,103 @@ func requestHeaders(msg xHeaderSource) []eaclSDK.Header {
 
 var errMissingOID = errors.New("object ID is missing")
 
-// nolint: funlen
 func (h *cfg) readObjectHeaders(dst *headerSource) error {
 	switch m := h.msg.(type) {
 	default:
 		panic(fmt.Sprintf("unexpected message type %T", h.msg))
 	case requestXHeaderSource:
-		switch req := m.req.(type) {
-		case
-			*objectV2.GetRequest,
-			*objectV2.HeadRequest:
-			if h.obj == nil {
-				return errMissingOID
-			}
-
-			objHeaders, completed := h.localObjectHeaders(h.cnr, h.obj)
-
-			dst.objectHeaders = objHeaders
-			dst.incompleteObjectHeaders = !completed
-		case
-			*objectV2.GetRangeRequest,
-			*objectV2.GetRangeHashRequest,
-			*objectV2.DeleteRequest:
-			if h.obj == nil {
-				return errMissingOID
-			}
-
-			dst.objectHeaders = addressHeaders(h.cnr, h.obj)
-		case *objectV2.PutRequest:
-			if v, ok := req.GetBody().GetObjectPart().(*objectV2.PutObjectPartInit); ok {
-				oV2 := new(objectV2.Object)
-				oV2.SetObjectID(v.GetObjectID())
-				oV2.SetHeader(v.GetHeader())
-
-				dst.objectHeaders = headersFromObject(object.NewFromV2(oV2), h.cnr, h.obj)
-			}
-		case *objectV2.SearchRequest:
-			cnrV2 := req.GetBody().GetContainerID()
-			var cnr cid.ID
-
-			if cnrV2 != nil {
-				if err := cnr.ReadFromV2(*cnrV2); err != nil {
-					return fmt.Errorf("can't parse container ID: %w", err)
-				}
-			}
-
-			dst.objectHeaders = []eaclSDK.Header{cidHeader(cnr)}
-		}
+		return h.readObjectHeadersFromRequestXHeaderSource(m, dst)
 	case responseXHeaderSource:
-		switch resp := m.resp.(type) {
-		default:
-			objectHeaders, completed := h.localObjectHeaders(h.cnr, h.obj)
+		return h.readObjectHeadersResponseXHeaderSource(m, dst)
+	}
+}
 
-			dst.objectHeaders = objectHeaders
-			dst.incompleteObjectHeaders = !completed
-		case *objectV2.GetResponse:
-			if v, ok := resp.GetBody().GetObjectPart().(*objectV2.GetObjectPartInit); ok {
-				oV2 := new(objectV2.Object)
-				oV2.SetObjectID(v.GetObjectID())
-				oV2.SetHeader(v.GetHeader())
+func (h *cfg) readObjectHeadersFromRequestXHeaderSource(m requestXHeaderSource, dst *headerSource) error {
+	switch req := m.req.(type) {
+	case
+		*objectV2.GetRequest,
+		*objectV2.HeadRequest:
+		if h.obj == nil {
+			return errMissingOID
+		}
 
-				dst.objectHeaders = headersFromObject(object.NewFromV2(oV2), h.cnr, h.obj)
-			}
-		case *objectV2.HeadResponse:
+		objHeaders, completed := h.localObjectHeaders(h.cnr, h.obj)
+
+		dst.objectHeaders = objHeaders
+		dst.incompleteObjectHeaders = !completed
+	case
+		*objectV2.GetRangeRequest,
+		*objectV2.GetRangeHashRequest,
+		*objectV2.DeleteRequest:
+		if h.obj == nil {
+			return errMissingOID
+		}
+
+		dst.objectHeaders = addressHeaders(h.cnr, h.obj)
+	case *objectV2.PutRequest:
+		if v, ok := req.GetBody().GetObjectPart().(*objectV2.PutObjectPartInit); ok {
 			oV2 := new(objectV2.Object)
-
-			var hdr *objectV2.Header
-
-			switch v := resp.GetBody().GetHeaderPart().(type) {
-			case *objectV2.ShortHeader:
-				hdr = new(objectV2.Header)
-
-				var idV2 refsV2.ContainerID
-				h.cnr.WriteToV2(&idV2)
-
-				hdr.SetContainerID(&idV2)
-				hdr.SetVersion(v.GetVersion())
-				hdr.SetCreationEpoch(v.GetCreationEpoch())
-				hdr.SetOwnerID(v.GetOwnerID())
-				hdr.SetObjectType(v.GetObjectType())
-				hdr.SetPayloadLength(v.GetPayloadLength())
-			case *objectV2.HeaderWithSignature:
-				hdr = v.GetHeader()
-			}
-
-			oV2.SetHeader(hdr)
+			oV2.SetObjectID(v.GetObjectID())
+			oV2.SetHeader(v.GetHeader())
 
 			dst.objectHeaders = headersFromObject(object.NewFromV2(oV2), h.cnr, h.obj)
 		}
-	}
+	case *objectV2.SearchRequest:
+		cnrV2 := req.GetBody().GetContainerID()
+		var cnr cid.ID
 
+		if cnrV2 != nil {
+			if err := cnr.ReadFromV2(*cnrV2); err != nil {
+				return fmt.Errorf("can't parse container ID: %w", err)
+			}
+		}
+
+		dst.objectHeaders = []eaclSDK.Header{cidHeader(cnr)}
+	}
+	return nil
+}
+
+func (h *cfg) readObjectHeadersResponseXHeaderSource(m responseXHeaderSource, dst *headerSource) error {
+	switch resp := m.resp.(type) {
+	default:
+		objectHeaders, completed := h.localObjectHeaders(h.cnr, h.obj)
+
+		dst.objectHeaders = objectHeaders
+		dst.incompleteObjectHeaders = !completed
+	case *objectV2.GetResponse:
+		if v, ok := resp.GetBody().GetObjectPart().(*objectV2.GetObjectPartInit); ok {
+			oV2 := new(objectV2.Object)
+			oV2.SetObjectID(v.GetObjectID())
+			oV2.SetHeader(v.GetHeader())
+
+			dst.objectHeaders = headersFromObject(object.NewFromV2(oV2), h.cnr, h.obj)
+		}
+	case *objectV2.HeadResponse:
+		oV2 := new(objectV2.Object)
+
+		var hdr *objectV2.Header
+
+		switch v := resp.GetBody().GetHeaderPart().(type) {
+		case *objectV2.ShortHeader:
+			hdr = new(objectV2.Header)
+
+			var idV2 refsV2.ContainerID
+			h.cnr.WriteToV2(&idV2)
+
+			hdr.SetContainerID(&idV2)
+			hdr.SetVersion(v.GetVersion())
+			hdr.SetCreationEpoch(v.GetCreationEpoch())
+			hdr.SetOwnerID(v.GetOwnerID())
+			hdr.SetObjectType(v.GetObjectType())
+			hdr.SetPayloadLength(v.GetPayloadLength())
+		case *objectV2.HeaderWithSignature:
+			hdr = v.GetHeader()
+		}
+
+		oV2.SetHeader(hdr)
+
+		dst.objectHeaders = headersFromObject(object.NewFromV2(oV2), h.cnr, h.obj)
+	}
 	return nil
 }