diff --git a/src/Symfony/Component/Form/CHANGELOG.md b/src/Symfony/Component/Form/CHANGELOG.md
index 88a19bc07e..03290fb8b5 100644
--- a/src/Symfony/Component/Form/CHANGELOG.md
+++ b/src/Symfony/Component/Form/CHANGELOG.md
@@ -172,3 +172,4 @@ CHANGELOG
  * ChoiceType now caches its created choice lists to improve performance
  * [BC BREAK] Rows of a collection field cannot be themed individually anymore. All rows in the collection
    field now have the same block names, which contains "entry" where it previously contained the row index.
+ * [BC BREAK] When registering a type through the DI extension, the tag alias has to match the actual type name.
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