diff --git a/src/mio.rs b/src/mio.rs
index 0b76aa4..60c3982 100644
--- a/src/mio.rs
+++ b/src/mio.rs
@@ -35,6 +35,7 @@ impl Source for Socket {
     }
 }
 
+#[cfg(target_endian = "little")]
 #[cfg(test)]
 mod tests {
     use super::*;
diff --git a/src/socket.rs b/src/socket.rs
index f73b90c..f9bcb32 100644
--- a/src/socket.rs
+++ b/src/socket.rs
@@ -426,7 +426,7 @@ impl Socket {
             libc::SOL_NETLINK,
             libc::NETLINK_PKTINFO,
         )?;
-        Ok(res == 1)
+        Ok(res != 0)
     }
 
     pub fn add_membership(&self, group: u32) -> Result<()> {
@@ -473,7 +473,7 @@ impl Socket {
             libc::SOL_NETLINK,
             libc::NETLINK_BROADCAST_ERROR,
         )?;
-        Ok(res == 1)
+        Ok(res != 0)
     }
 
     /// `NETLINK_NO_ENOBUFS` (since Linux 2.6.30). This flag can be used by
@@ -494,7 +494,7 @@ impl Socket {
             libc::SOL_NETLINK,
             libc::NETLINK_NO_ENOBUFS,
         )?;
-        Ok(res == 1)
+        Ok(res != 0)
     }
 
     /// `NETLINK_LISTEN_ALL_NSID` (since Linux 4.2). When set, this socket will
@@ -518,7 +518,7 @@ impl Socket {
             libc::SOL_NETLINK,
             libc::NETLINK_LISTEN_ALL_NSID,
         )?;
-        Ok(res == 1)
+        Ok(res != 0)
     }
 
     /// `NETLINK_CAP_ACK` (since Linux 4.2). The kernel may fail to allocate the
@@ -543,7 +543,7 @@ impl Socket {
             libc::SOL_NETLINK,
             libc::NETLINK_CAP_ACK,
         )?;
-        Ok(res == 1)
+        Ok(res != 0)
     }
 
     /// `NETLINK_EXT_ACK`
@@ -565,7 +565,7 @@ impl Socket {
             libc::SOL_NETLINK,
             libc::NETLINK_EXT_ACK,
         )?;
-        Ok(res == 1)
+        Ok(res != 0)
     }
 
     /// Sets socket receive buffer in bytes.