diff --git a/fern/pages/changelogs/csharp-sdk/2025-01-22.mdx b/fern/pages/changelogs/csharp-sdk/2025-01-22.mdx
index 4e2ec6ac3a7..f8fa9af69d4 100644
--- a/fern/pages/changelogs/csharp-sdk/2025-01-22.mdx
+++ b/fern/pages/changelogs/csharp-sdk/2025-01-22.mdx
@@ -5,3 +5,6 @@
 - Objects, lists, maps, dictionaries, undiscriminated, and discriminated unions are serialized to JSON.
 
 
+**`(fix):`** Only use `.Value` on nullable structs when serializing parameters to headers and querystring parameters.
+
+