Stackoverflow when querying document with cycle reference using @DBRef

@Document
class Site {
    @DBRef User admin;
}

@Document
class User {
    @DBRef Site site;
}

Site siteSaved = siteRepository.save(new Site());
User userSaved = userRepository.save(new User(siteSaved));
siteSaved.setAdmin(userSaved);
siteRepository.save(siteSaved);

siteRepository.findOne(siteSaved.id); // stackoverflow here

java.lang.StackOverflowError
	at org.bson.BasicBSONEncoder._put(BasicBSONEncoder.java:417)
	at org.bson.BasicBSONEncoder.putObjectId(BasicBSONEncoder.java:388)
	at org.bson.BasicBSONEncoder._putObjectField(BasicBSONEncoder.java:188)
	at org.bson.BasicBSONEncoder.putObject(BasicBSONEncoder.java:121)
	at org.bson.BasicBSONEncoder.putObject(BasicBSONEncoder.java:86)
	at com.mongodb.DefaultDBEncoder.writeObject(DefaultDBEncoder.java:27)
	at com.mongodb.OutMessage.putObject(OutMessage.java:142)
	at com.mongodb.OutMessage._appendQuery(OutMessage.java:85)
	at com.mongodb.OutMessage.query(OutMessage.java:44)
	at com.mongodb.OutMessage.query(OutMessage.java:38)
	at com.mongodb.DBApiLayer$MyCollection.__find(DBApiLayer.java:303)
	at com.mongodb.DBCollection.findOne(DBCollection.java:332)
	at com.mongodb.DBCollection.findOne(DBCollection.java:318)
	at com.mongodb.DBRefBase.fetch(DBRefBase.java:52)
	at org.springframework.data.mongodb.core.convert.MappingMongoConverter$DelegatingParameterValueProvider.getParameterValue(MappingMongoConverter.java:950)
	at org.springframework.data.mapping.model.BeanWrapper.<init>(BeanWrapper.java:115)
	at org.springframework.data.mapping.model.BeanWrapper.create(BeanWrapper.java:73)
	at org.springframework.data.mongodb.core.convert.MappingMongoConverter.read(MappingMongoConverter.java:217)
	at org.springframework.data.mongodb.core.convert.MappingMongoConverter.read(MappingMongoConverter.java:200)
	at org.springframework.data.mongodb.core.convert.MappingMongoConverter.getValueInternal(MappingMongoConverter.java:712)
	at org.springframework.data.mongodb.core.convert.MappingMongoConverter$2.doWithAssociation(MappingMongoConverter.java:239)
	at org.springframework.data.mapping.model.BasicPersistentEntity.doWithAssociations(BasicPersistentEntity.java:185)
	at org.springframework.data.mongodb.core.convert.MappingMongoConverter.read(MappingMongoConverter.java:236)
	at org.springframework.data.mongodb.core.convert.MappingMongoConverter.read(MappingMongoConverter.java:200)
	at org.springframework.data.mongodb.core.convert.MappingMongoConverter$DelegatingParameterValueProvider.getParameterValue(MappingMongoConverter.java:950)
	at org.springframework.data.mapping.model.BeanWrapper.<init>(BeanWrapper.java:115)
	at org.springframework.data.mapping.model.BeanWrapper.create(BeanWrapper.java:73)