diff --git a/readme.md b/readme.md
index 43eed27..b68f63b 100644
--- a/readme.md
+++ b/readme.md
@@ -23,7 +23,7 @@
 * [x] Constants
 * [x] Functions
 * [x] CSS units conversion
-* [ ] Previous result
+* [x] Previous result
 * [ ] Sum
 * [ ] Average
 * [x] Comments, headers, labels