diff --git a/net_util/src/tap.rs b/net_util/src/tap.rs
index d5eba0462..bb45bb890 100644
--- a/net_util/src/tap.rs
+++ b/net_util/src/tap.rs
@@ -190,7 +190,7 @@ impl Tap {
             return Err(Error::ConfigureTap(IoError::last_os_error()));
         }
 
-        let tap = Tap { if_name, tap_file };
+        let tap = Tap { tap_file, if_name };
         let offload_flags =
             net_gen::TUN_F_CSUM | net_gen::TUN_F_UFO | net_gen::TUN_F_TSO4 | net_gen::TUN_F_TSO6;
         let vnet_hdr_size = vnet_hdr_len() as i32;