diff --git a/src/device.rs b/src/device.rs
index 561b11fd..3e716604 100644
--- a/src/device.rs
+++ b/src/device.rs
@@ -266,7 +266,7 @@ impl Address {
             return None;
         }
 
-        match (*ptr).sa_family as u32 {
+        match (*ptr).sa_family as u16 {
             WinSock::AF_INET => {
                 let ptr: *const WinSock::SOCKADDR_IN = std::mem::transmute(ptr);
                 let addr: [u8; 4] = ((*ptr).sin_addr.S_un.S_addr).to_ne_bytes();