diff --git a/axum/src/handler/into_service.rs b/axum/src/handler/into_service.rs
index 34f36b2d..7ccbd335 100644
--- a/axum/src/handler/into_service.rs
+++ b/axum/src/handler/into_service.rs
@@ -35,9 +35,7 @@ impl<H, T, B> IntoService<H, T, B> {
 
 impl<H, T, B> fmt::Debug for IntoService<H, T, B> {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        f.debug_tuple("IntoService")
-            .field(&format_args!("..."))
-            .finish()
+        f.debug_struct("IntoService").finish_non_exhaustive()
     }
 }
 
diff --git a/axum/src/macros.rs b/axum/src/macros.rs
index d26cc87c..6bbebb3c 100644
--- a/axum/src/macros.rs
+++ b/axum/src/macros.rs
@@ -24,7 +24,7 @@ macro_rules! opaque_future {
 
         impl<$($param),*> std::fmt::Debug for $name<$($param),*> {
             fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-                f.debug_tuple(stringify!($name)).field(&format_args!("...")).finish()
+                f.debug_struct(stringify!($name)).finish_non_exhaustive()
             }
         }