diff --git a/notification-server/src/bin/server.rs b/notification-server/src/bin/server.rs
index 75732040..9574dd9e 100644
--- a/notification-server/src/bin/server.rs
+++ b/notification-server/src/bin/server.rs
@@ -10,7 +10,7 @@ use serde::Deserialize;
 use std::sync::Arc;
 use tokio_postgres::Config;
 use tracing::info;
-use tracing_subscriber;
+
 
 #[derive(Debug, Parser)]
 struct Args {
diff --git a/notification-server/src/bin/service.rs b/notification-server/src/bin/service.rs
index 591b06d9..872dba57 100644
--- a/notification-server/src/bin/service.rs
+++ b/notification-server/src/bin/service.rs
@@ -47,7 +47,7 @@ fn get_cis2_events_addresses(effects: &AccountTransactionEffects) -> Option<Vec<
                             Ok(Event::Mint { amount, .. }) => Some(amount.to_string()),
                             _ => None,
                         })
-                        .filter(|t| Option::is_some(t))
+                        .filter(Option::is_some)
                         .collect(),
                     _ => None,
                 })