diff --git a/net_util/src/tap.rs b/net_util/src/tap.rs
index d700bc3f7..07a6e072c 100644
--- a/net_util/src/tap.rs
+++ b/net_util/src/tap.rs
@@ -124,7 +124,7 @@ impl Tap {
             // Open calls are safe because we give a constant null-terminated
             // string and verify the result.
             libc::open(
-                b"/dev/net/tun\0".as_ptr() as *const c_char,
+                c"/dev/net/tun".as_ptr() as *const c_char,
                 flags.unwrap_or(libc::O_RDWR | libc::O_NONBLOCK | libc::O_CLOEXEC),
             )
         };