diff --git a/lib/codecs/src/decoding/framing/chunked_gelf.rs b/lib/codecs/src/decoding/framing/chunked_gelf.rs
index 2f6b20e7b3e10..090db6bd20918 100644
--- a/lib/codecs/src/decoding/framing/chunked_gelf.rs
+++ b/lib/codecs/src/decoding/framing/chunked_gelf.rs
@@ -32,6 +32,7 @@ const fn default_pending_messages_limit() -> usize {
 #[derive(Debug, Clone, Default)]
 pub struct ChunkedGelfDecoderConfig {
     /// Options for the chunked GELF decoder.
+    #[serde(default)]
     pub chunked_gelf: ChunkedGelfDecoderOptions,
 }