diff --git a/CHANGELOG b/CHANGELOG
index de07e4747..68a1e1c89 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -68,6 +68,10 @@ section "Removed interfaces".
 Man page now contains up-to-date list of flags, as well as explanation of
 flag's behavior.
 
+- Deprecated long flags with one dash, added two-dash version
+Flags that aren't one-character, but start with one dash(e.g. -eval)
+are now deprecated; long version(--eval) was added instead.
+
 - Indented C/C++ code to follow emacs's gnu C style
 This is a first step towards coding standards in the
 documentation. Additionally all in the src/c/ directory are listed in the