diff --git a/src/socket.rs b/src/socket.rs
index 1fc6f080..f1a20b38 100644
--- a/src/socket.rs
+++ b/src/socket.rs
@@ -1935,7 +1935,7 @@ impl Socket {
     /// [`set_only_v6`]: Socket::set_only_v6
     pub fn only_v6(&self) -> io::Result<bool> {
         unsafe {
-            getsockopt::<c_int>(self.as_raw(), sys::IPPROTO_IPV6, sys::IPV6_V6ONLY)
+            getsockopt::<Bool>(self.as_raw(), sys::IPPROTO_IPV6, sys::IPV6_V6ONLY)
                 .map(|only_v6| only_v6 != 0)
         }
     }