diff --git a/rustfs/src/storage/sse.rs b/rustfs/src/storage/sse.rs
index 966d273da..eda06a7dd 100644
--- a/rustfs/src/storage/sse.rs
+++ b/rustfs/src/storage/sse.rs
@@ -2719,6 +2719,7 @@ pub trait SseDekProvider: Send + Sync {
     /// Defaults to refusing: only a provider holding the MinIO master secret
     /// can serve these, and a provider that cannot must fail rather than fall
     /// back to a decoder that would misread the bytes.
+    #[cfg(feature = "rio-v2")]
     async fn decrypt_minio_sse_dek(
         &self,
         _encrypted_dek: &[u8],