diff --git a/support/Release notes.txt b/support/Release notes.txt
index 4b0fbf53..ee5b570c 100644
--- a/support/Release notes.txt	
+++ b/support/Release notes.txt	
@@ -1,5 +1,6 @@
 ===============================================================================
 18.15.2
+Workaround for Segger ARM Link-Time-Optimisation (LTO) bug.
 etl::array_view constructor from etl or std array is no longer explicit.
 
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