diff --git a/src/runtime/endpoint.rs b/src/runtime/endpoint.rs
index 342db8d7230a5216faee4e3464b721fea2b8b0b4..c5f11524fa972919851acdd8a0552aab266bcd03 100644
--- a/src/runtime/endpoint.rs
+++ b/src/runtime/endpoint.rs
@@ -61,7 +61,7 @@ impl std::fmt::Debug for Endpoint {
             Endpoint::Memory { .. } => "Memory",
             Endpoint::Network(..) => "Network",
         };
-        write!(f, "Endpoint::{}", s)
+        f.write_fmt(format_args!("Endpoint::{}", s))
     }
 }