--- a/src/error.rs	Tue Dec 22 13:56:56 2020 +0100
+++ b/src/error.rs	Tue Dec 22 13:58:47 2020 +0100
@@ -19,15 +19,15 @@
 pub(crate) enum ParseErrorInner {
     #[error("failed to parse socket address")]
     ResolvAddr(#[from] crate::resolv_addr::ResolvAddrError),
-    #[cfg(all(linux, feature = "enable_systemd"))]
+    #[cfg(all(target_os = "linux", feature = "enable_systemd"))]
     #[error("invalid character '{c}' in systemd socket name {string} at position {pos}")]
     InvalidCharacter { string: String, c: char, pos: usize, },
-    #[cfg(all(linux, feature = "enable_systemd"))]
+    #[cfg(all(target_os = "linux", feature = "enable_systemd"))]
     #[error("systemd socket name {string} is {len} characters long which is more than the limit 255")]
     LongSocketName { string: String, len: usize, },
-    #[cfg(not(all(linux, feature = "enable_systemd")))]
-    #[cfg_attr(not(linux), error("can't parse {0} because systemd is not supported on this operating system"))]
-    #[cfg_attr(linux, error("can't parse {0} because systemd support was disabled during build"))]
+    #[cfg(not(all(target_os = "linux", feature = "enable_systemd")))]
+    #[cfg_attr(not(target_os = "linux"), error("can't parse {0} because systemd is not supported on this operating system"))]
+    #[cfg_attr(target_os = "linux", error("can't parse {0} because systemd support was disabled during build"))]
     SystemdUnsupported(String),
 }
 
@@ -66,14 +66,14 @@
     BindFailed { addr: std::net::SocketAddr, #[source] error: io::Error, },
     #[error("failed to bind {addr}")]
     BindOrResolvFailed { addr: crate::resolv_addr::ResolvAddr, #[source] error: io::Error, },
-    #[cfg(all(linux, feature = "enable_systemd"))]
+    #[cfg(all(target_os = "linux", feature = "enable_systemd"))]
     #[error("failed to receive descriptors with names")]
     ReceiveDescriptors(#[source] crate::systemd_sockets::Error),
     #[error("missing systemd socket {0} - a typo or an attempt to bind twice")]
-    #[cfg(all(linux, feature = "enable_systemd"))]
+    #[cfg(all(target_os = "linux", feature = "enable_systemd"))]
     MissingDescriptor(String),
     #[error("the systemd socket {0} is not an internet socket")]
-    #[cfg(all(linux, feature = "enable_systemd"))]
+    #[cfg(all(target_os = "linux", feature = "enable_systemd"))]
     NotInetSocket(String),
 }