diff --git a/changelog/v2.13.1/changelog.md b/changelog/v2.13.1/changelog.md
index c78767e47..787f12aba 100644
--- a/changelog/v2.13.1/changelog.md
+++ b/changelog/v2.13.1/changelog.md
@@ -24,6 +24,7 @@
 #### mikroSDK
 
 + Fixed LCD implementation for all architectures
+  + Issue with timing after optimizing (speeding up) SDK
 
 ### NEW HARDWARE