diff --git a/CHANGELOG-2.1.md b/CHANGELOG-2.1.md
index c95bb9b2d7..832e791e79 100644
--- a/CHANGELOG-2.1.md
+++ b/CHANGELOG-2.1.md
@@ -201,6 +201,7 @@ To get the diff between two versions, go to https://github.com/symfony/symfony/c
 
 ### Serializer
 
+ * [BC BREAK] changed `GetSetMethodNormalizer`'s key names from all lowercased to camelCased (e.g. `mypropertyvalue` to `myPropertyValue`)
  * [BC BREAK] convert the `item` XML tag to an array 
 
    ``` xml
@@ -227,7 +228,6 @@ To get the diff between two versions, go to https://github.com/symfony/symfony/c
             )
         )
 
-
 ### Translation
 
  * changed the default extension for XLIFF files from .xliff to .xlf