diff --git a/quinn-udp/src/unix.rs b/quinn-udp/src/unix.rs
index 2f87bf4de..5b4d1d0b8 100644
--- a/quinn-udp/src/unix.rs
+++ b/quinn-udp/src/unix.rs
@@ -964,7 +964,10 @@ impl ControlMetadata {
             (libc::IPPROTO_IPV6, libc::IPV6_PKTINFO) => {
                 let pktinfo = unsafe { cmsg::decode::<libc::in6_pktinfo, libc::cmsghdr>(cmsg) };
                 self.dst_ip = Some(IpAddr::V6(Ipv6Addr::from(pktinfo.ipi6_addr.s6_addr)));
-                self.interface_index = Some(pktinfo.ipi6_ifindex as u32);
+                #[cfg_attr(not(target_os = "android"), expect(clippy::unnecessary_cast))]
+                {
+                    self.interface_index = Some(pktinfo.ipi6_ifindex as u32);
+                }
             }
             #[cfg(any(target_os = "linux", target_os = "android"))]
             (libc::SOL_UDP, libc::UDP_GRO) => unsafe {