diff --git a/crates/tor-config/src/mut_cfg.rs b/crates/tor-config/src/mut_cfg.rs
index 792b13fed..4cb736a72 100644
--- a/crates/tor-config/src/mut_cfg.rs
+++ b/crates/tor-config/src/mut_cfg.rs
@@ -6,7 +6,7 @@ use std::sync::{Arc, RwLock};
 ///
 /// Internally, this is just a `RwLock<Arc<T>>`; this type just defines some
 /// convenience wrappers for it.
-#[derive(Debug)]
+#[derive(Debug, Default)]
 pub struct MutCfg<T> {
     /// The interior configuration object.
     cfg: RwLock<Arc<T>>,
@@ -55,12 +55,6 @@ impl<T> MutCfg<T> {
     }
 }
 
-impl<T: Default> Default for MutCfg<T> {
-    fn default() -> Self {
-        MutCfg::new(T::default())
-    }
-}
-
 impl<T> From<T> for MutCfg<T> {
     fn from(config: T) -> MutCfg<T> {
         MutCfg::new(config)