diff --git a/Cargo.lock b/Cargo.lock
index 0197e8e..d3a565f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -86,6 +86,7 @@ dependencies = [
  "serde",
  "serde_derive",
  "serde_json",
+ "serde_repr",
  "tokio",
  "toml",
 ]
@@ -714,6 +715,17 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "serde_repr"
+version = "0.1.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9a5ec9fa74a20ebbe5d9ac23dac1fc96ba0ecfe9f50f2843b52e537b10fbcb4e"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "serde_urlencoded"
 version = "0.7.1"
diff --git a/Cargo.toml b/Cargo.toml
index 8f129a4..7ec31fd 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -13,6 +13,7 @@ regex = "1.7"
 reqwest = { version = "*", features = ["json", "rustls-tls"], default-features = false }
 serde = { version = "1", features = ["derive"] }
 serde_json = "*"
+serde_repr = "*"
 tokio = { version = "1", features = ["macros", "rt-multi-thread"] }
 toml = "*"
 
diff --git a/src/main.rs b/src/main.rs
index b78e950..4d9f62d 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -6,15 +6,24 @@ use std::time::Duration;
 
 use serde::Deserialize;
 use serde_json::json;
+use serde_repr::Deserialize_repr;
 use tokio::task;
 
 use crate::checker::check_host;
 use crate::config::{CheckConfig, Config};
 
-#[derive(Deserialize)]
+#[derive(Debug, Deserialize_repr, PartialEq)]
+#[repr(u8)]
+enum MouseButton {
+    Left = 1,
+    Middle = 2,
+    Right = 3,
+}
+
+#[derive(Debug, Deserialize, PartialEq)]
 struct ClickEvent {
     name: String,
-    button: u8,
+    button: MouseButton,
 }
 
 async fn print_states(check_configs: &[CheckConfig]) {
@@ -81,7 +90,7 @@ async fn main() {
         loop {
             if let Ok(click_event) = read_click_event() {
                 // Ignore click event if not left mouse button
-                if click_event.button != 1 {
+                if click_event.button != MouseButton::Left {
                     continue;
                 };
                 if let Some(click_cmd) = get_click_cmd(click_event.name).await {
@@ -105,3 +114,26 @@ async fn main() {
 
     let _r = tokio::join!(inputs, checks);
 }
+
+#[cfg(test)]
+mod tests {
+    use crate::{ClickEvent, MouseButton};
+
+    #[test]
+    fn test_should_deserialize_click_event() {
+        let actual = serde_json::from_str::<ClickEvent>(r#"{"name": "test", "button": 1}"#);
+        let expected = ClickEvent {
+            name: "test".to_string(),
+            button: MouseButton::Left,
+        };
+
+        if actual.is_err() {
+            println!("{:?}", actual)
+        }
+
+        assert!(actual.is_ok());
+
+        let actual = actual.unwrap();
+        assert_eq!(actual, expected);
+    }
+}