diff --git a/axum/src/routing/mod.rs b/axum/src/routing/mod.rs
index 97d1047b..8438da6b 100644
--- a/axum/src/routing/mod.rs
+++ b/axum/src/routing/mod.rs
@@ -315,7 +315,7 @@ where
                             let uri = req.uri();
                             let headers = req.headers();
                             unreachable!(
-                                "version={version:?}; method={method:?}; uri={uri:?}; headers={headers:?}",
+                                "router={self:?}; version={version:?}; method={method:?}; uri={uri:?}; headers={headers:?}",
                             )
                         });
                 }