diff --git a/ChatTwo/Http/static/start.js b/ChatTwo/Http/static/start.js
index 3f8f45a..95776da 100644
--- a/ChatTwo/Http/static/start.js
+++ b/ChatTwo/Http/static/start.js
@@ -57,6 +57,9 @@
         this.elements.inputForm.addEventListener('submit', async (event) => {
             event.preventDefault();
             const message = this.elements.chatInput.value;
+            if (message.length > 500) {
+                return;
+            }
 
             const rawResponse = await fetch('/send', {
                 method: 'POST',
diff --git a/ChatTwo/Http/templates/chat.html b/ChatTwo/Http/templates/chat.html
index ff17f89..c3e3854 100644
--- a/ChatTwo/Http/templates/chat.html
+++ b/ChatTwo/Http/templates/chat.html
@@ -30,7 +30,7 @@
                 </div>
 
                 <div class="input-container">
-                    <input type="text" id="chat-input" autocomplete="off" placeholder="Message" enterkeyhint="send">
+                    <input type="text" id="chat-input" autocomplete="off" placeholder="Message" enterkeyhint="send" maxlength="500">
                     <div id="channel-hint"></div>
                 </div>