diff --git a/web/alert/index.js b/web/alert/index.js
index 483386e..7ff25ea 100644
--- a/web/alert/index.js
+++ b/web/alert/index.js
@@ -12,7 +12,7 @@ $(async function () {
             $(audio).on("loadedmetadata", function() {
                 resolve(audio);
             });
-            audio.volume = Math.max(1,Math.min(0,volume/100.0));
+            audio.volume = Math.min(1,Math.max(0,volume/100.0));
             audio.src = src;
             audio.play().catch((err)=>{
                 if(err.toString().startsWith('NotAllowedError')){