diff --git a/parser/src/cfg/mod.rs b/parser/src/cfg/mod.rs
index f04fb3411..c2cc89100 100755
--- a/parser/src/cfg/mod.rs
+++ b/parser/src/cfg/mod.rs
@@ -1660,9 +1660,13 @@ fn parse_action_list(ac: &[SExpr], s: &ParserState) -> Result<&'static KanataAct
         CMD => parse_cmd(&ac[1..], s, CmdType::Standard),
         CMD_OUTPUT_KEYS => parse_cmd(&ac[1..], s, CmdType::OutputKeys),
         PUSH_MESSAGE => parse_push_message(&ac[1..], s),
+        #[cfg(any(target_os = "windows", target_os = "unknown"))]
         SEND_WMSG_SYNC => win_send_message(&ac[1..], s, SEND_WMSG_SYNC),
+        #[cfg(any(target_os = "windows", target_os = "unknown"))]
         SEND_WMSG_SYNC_A => win_send_message(&ac[1..], s, SEND_WMSG_SYNC_A),
+        #[cfg(any(target_os = "windows", target_os = "unknown"))]
         SEND_WMSG_ASYNC => win_post_message(&ac[1..], s, SEND_WMSG_ASYNC),
+        #[cfg(any(target_os = "windows", target_os = "unknown"))]
         SEND_WMSG_ASYNC_A => win_post_message(&ac[1..], s, SEND_WMSG_ASYNC_A),
         FORK => parse_fork(&ac[1..], s),
         CAPS_WORD | CAPS_WORD_A => {
diff --git a/parser/src/custom_action.rs b/parser/src/custom_action.rs
index c8eb2be57..358371d81 100644
--- a/parser/src/custom_action.rs
+++ b/parser/src/custom_action.rs
@@ -3,6 +3,7 @@
 //! When adding a new custom action, the macro section of the config.adoc documentation may need to
 //! be updated, to include the new action to the documented list of supported actions in macro.
 
+#[cfg(any(target_os = "windows", target_os = "unknown"))]
 use crate::cfg::WinMsg;
 use anyhow::{anyhow, Result};
 use core::fmt;
@@ -15,7 +16,9 @@ pub enum CustomAction {
     Cmd(Vec<String>),
     CmdOutputKeys(Vec<String>),
     PushMessage(Vec<SimpleSExpr>),
+    #[cfg(any(target_os = "windows", target_os = "unknown"))]
     WinSendMessage(WinMsg),
+    #[cfg(any(target_os = "windows", target_os = "unknown"))]
     WinPostMessage(WinMsg),
     Unicode(char),
     Mouse(Btn),