diff --git a/net_util/src/queue_pair.rs b/net_util/src/queue_pair.rs
index ee4d4d61c..33b49a0c6 100644
--- a/net_util/src/queue_pair.rs
+++ b/net_util/src/queue_pair.rs
@@ -81,7 +81,7 @@ impl TxVirtio {
                     assert!(buf.len() >= desc.len() as usize);
                     let buf = buf.ptr_guard_mut();
                     let iovec = libc::iovec {
-                        iov_base: buf.as_ptr() as *mut libc::c_void,
+                        iov_base: buf.as_ptr().cast(),
                         iov_len: desc.len() as libc::size_t,
                     };
                     iovecs.push(iovec);
@@ -238,7 +238,7 @@ impl RxVirtio {
                     assert!(buf.len() >= desc.len() as usize);
                     let buf = buf.ptr_guard_mut();
                     let iovec = libc::iovec {
-                        iov_base: buf.as_ptr() as *mut libc::c_void,
+                        iov_base: buf.as_ptr().cast(),
                         iov_len: desc.len() as libc::size_t,
                     };
                     iovecs.push(iovec);
diff --git a/net_util/src/tap.rs b/net_util/src/tap.rs
index 43b42a4a2..012c5b944 100644
--- a/net_util/src/tap.rs
+++ b/net_util/src/tap.rs
@@ -169,7 +169,7 @@ impl Tap {
             // Open calls are safe because we give a constant null-terminated
             // string and verify the result.
             libc::open(
-                c"/dev/net/tun".as_ptr() as *const c_char,
+                c"/dev/net/tun".as_ptr().cast(),
                 flags.unwrap_or(libc::O_RDWR | libc::O_NONBLOCK | libc::O_CLOEXEC),
             )
         };