diff --git a/sdk/src/types/api/core.rs b/sdk/src/types/api/core.rs
index db1b1ffe7a..1a0648cf53 100644
--- a/sdk/src/types/api/core.rs
+++ b/sdk/src/types/api/core.rs
@@ -268,8 +268,10 @@ pub struct IssuanceBlockHeaderResponse {
     /// Blocks that are strongly directly approved.
     pub strong_parents: BTreeSet<BlockId>,
     /// Blocks that are weakly directly approved.
+    #[serde(default, skip_serializing_if = "BTreeSet::is_empty")]
     pub weak_parents: BTreeSet<BlockId>,
     /// Blocks that are directly referenced to adjust opinion.
+    #[serde(default, skip_serializing_if = "BTreeSet::is_empty")]
     pub shallow_like_parents: BTreeSet<BlockId>,
     /// The slot index of the latest finalized slot.
     pub latest_finalized_slot: SlotIndex,
diff --git a/sdk/src/wallet/operations/block.rs b/sdk/src/wallet/operations/block.rs
index b6857c9c76..93f1a63914 100644
--- a/sdk/src/wallet/operations/block.rs
+++ b/sdk/src/wallet/operations/block.rs
@@ -13,7 +13,7 @@ where
     crate::client::Error: From<S::Error>,
 {
     pub(crate) async fn submit_basic_block(&self, payload: Option<Payload>) -> Result<BlockId> {
-        log::debug!("submit_block");
+        log::debug!("submit_basic_block");
 
         let block = self
             .client()