diff --git a/.changeset/tiny-boxes-play.md b/.changeset/tiny-boxes-play.md
index 4bcfec311..d0bd3fd00 100644
--- a/.changeset/tiny-boxes-play.md
+++ b/.changeset/tiny-boxes-play.md
@@ -6,4 +6,4 @@
 "mobx-undecorate": patch
 ---
 
-In TypeScript transpilation, disable useDefineForClassFields to reduce memory requirements of classes having optional members.
+Disable `useDefineForClassFields` in `tsconfig.json` to reduce memory footprint and improve performance of class instances with undefined and unused members.