diff --git a/src/clob/ws/subscription.rs b/src/clob/ws/subscription.rs
index d01aa2da..5b6e26c5 100644
--- a/src/clob/ws/subscription.rs
+++ b/src/clob/ws/subscription.rs
@@ -300,12 +300,7 @@ impl SubscriptionManager {
                             WsMessage::LastTradePrice(ltp) => asset_ids_set.contains(&ltp.asset_id),
                             WsMessage::TickSizeChange(tsc) => asset_ids_set.contains(&tsc.asset_id),
                             WsMessage::BestBidAsk(bba) => asset_ids_set.contains(&bba.asset_id),
-                            WsMessage::NewMarket(nm) => {
-                                nm.asset_ids.iter().any(|id| asset_ids_set.contains(id))
-                            },
-                            WsMessage::MarketResolved(mr) => {
-                                mr.asset_ids.iter().any(|id| asset_ids_set.contains(id))
-                            },
+                            WsMessage::NewMarket(_) | WsMessage::MarketResolved(_) => true,
                             _ => false,
                         };
 
diff --git a/src/data/types/mod.rs b/src/data/types/mod.rs
index 02e01876..6c198524 100644
--- a/src/data/types/mod.rs
+++ b/src/data/types/mod.rs
@@ -49,6 +49,8 @@ pub enum ActivityType {
     /// Yield
     Yield,
     /// Maker rebate (fee rebate for providing liquidity).
+    #[serde(rename = "MAKER_REBATE")]
+    #[strum(serialize = "MAKER_REBATE")]
     MakerRebate,
     /// Unknown activity type from the API (captures the raw value for debugging).
     #[serde(untagged)]