# Functional interface conversion is disabled

**URL:** <https://discuss.kotlinlang.org/t/functional-interface-conversion-is-disabled/16845>\
**Category:** Uncategorized\
**Created:** [March 25, 2020, 6:51pm UTC](https://discuss.kotlinlang.org/t/functional-interface-conversion-is-disabled/16845 "2020-03-25T18:51:55Z")\
**Posts on this page:** 1\
**Showing post:** 1

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**Author:** ![tieskedh](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.kotlinlang.org/tieskedh/32/2816_2.png) [@tieskedh](https://discuss.kotlinlang.org/u/tieskedh)\
**Post date:** [March 25, 2020, 6:51pm UTC](https://discuss.kotlinlang.org/t/functional-interface-conversion-is-disabled/16845/1 "2020-03-25T18:51:55Z")

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Hi,

Im using kotlin 1.4M1 and are getting the error:  
the feature “functional interface conversion” is disabled.  
How can I enable it?

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_[View the full topic](https://discuss.kotlinlang.org/t/functional-interface-conversion-is-disabled/16845)._