diff --git a/src/config.rs b/src/config.rs
index 669bbe9..d6d9538 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -45,22 +45,16 @@ pub enum Upstream {
     Proxy(ProxyToUpstream),
 }
 
-#[derive(Debug)]
+#[derive(Debug, Default)]
 struct Addr(Mutex<UpstreamAddress>);
 
-impl Default for Addr {
-    fn default() -> Self {
-        Self(Default::default())
-    }
-}
-
 impl Clone for Addr {
     fn clone(&self) -> Self {
         tokio::task::block_in_place(|| Self(Mutex::new(self.0.blocking_lock().clone())))
     }
 }
 
-#[derive(Debug, Clone, Deserialize)]
+#[derive(Debug, Clone, Deserialize, Default)]
 pub struct ProxyToUpstream {
     pub name: String,
     pub addr: String,
@@ -76,17 +70,6 @@ impl ProxyToUpstream {
     }
 }
 
-impl Default for ProxyToUpstream {
-    fn default() -> Self {
-        Self {
-            name: Default::default(),
-            addr: Default::default(),
-            protocol: Default::default(),
-            addresses: Default::default(),
-        }
-    }
-}
-
 #[derive(Debug)]
 pub enum ConfigError {
     IO(IOError),