diff --git a/src/windows.rs b/src/windows.rs
index 91d0099..0bbea30 100644
--- a/src/windows.rs
+++ b/src/windows.rs
@@ -171,6 +171,7 @@
 
     pub struct in6_addr {
         pub s6_addr: [UCHAR; 16],
+        _align: [u16; 0],
     }
 
     pub struct ip_mreq {