# ICU exclude lowercase filter

**URL:** <https://discuss.elastic.co/t/icu-exclude-lowercase-filter/26137>\
**Category:** Elasticsearch\
**Created:** [July 23, 2015, 8:44am UTC](https://discuss.elastic.co/t/icu-exclude-lowercase-filter/26137 "2015-07-23T08:44:59Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![alexshaman](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/alexshaman/32/1497_2.png) [@alexshaman](https://discuss.elastic.co/u/alexshaman)\
**Post date:** [July 23, 2015, 8:44am UTC](https://discuss.elastic.co/t/icu-exclude-lowercase-filter/26137/1 "2015-07-23T08:44:59Z")

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Hello guys,

I use icu-normalizer and icu-folding for elasticsearch. I know that icu uses a lowercase filter by default. I need to exclude or switch off this filter for special field. Is it possible do this?

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 5, 2017, 11:59pm UTC](https://discuss.elastic.co/t/icu-exclude-lowercase-filter/26137/2 "2017-07-05T23:59:39Z")

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