diff --git a/src/runtime/errors.rs b/src/runtime/errors.rs
index 0a654f24e527816ee61793c61bffa5c8b3506ead..b34d96cfe33483c620428adff9c6840b81129f98 100644
--- a/src/runtime/errors.rs
+++ b/src/runtime/errors.rs
@@ -88,6 +88,7 @@ impl From<MainComponentErr> for ConfigErr {
         match e {
             M::NoSuchComponent => C::NoSuchComponent,
             M::NonPortTypeParameters => C::NonPortTypeParameters,
+            _ => todo!(),
         }
     }
 }