diff --git a/chat-init.js b/chat-init.js
index 6974640..cb0f082 100644
--- a/chat-init.js
+++ b/chat-init.js
@@ -574,7 +574,8 @@ document.addEventListener("DOMContentLoaded", () => {
 
     // Send on Enter; newline with Shift+Enter
     chatInput.addEventListener('keydown', (e) => {
-        if (e.key === 'Enter' && !e.shiftKey) {
+        const isEnter = e.key === 'Enter' || e.keyCode === 13;
+        if (isEnter && !e.shiftKey) {
             e.preventDefault();
             handleSendMessage();
         }
diff --git a/simple.js b/simple.js
index 4562340..257567a 100644
--- a/simple.js
+++ b/simple.js
@@ -288,7 +288,8 @@ document.addEventListener("DOMContentLoaded", () => {
 
         // Send on Enter; newline with Shift+Enter
         simpleInput.addEventListener('keydown', (e) => {
-            if (e.key === 'Enter' && !e.shiftKey) {
+            const isEnter = e.key === 'Enter' || e.keyCode === 13;
+            if (isEnter && !e.shiftKey) {
                 e.preventDefault();
                 handleSimpleSend();
             }