diff --git a/include/base.css b/include/base.css
index 478b4d01..90c17e47 100644
--- a/include/base.css
+++ b/include/base.css
@@ -238,6 +238,7 @@ html {
   position: relative;
   left: -40px;
   z-index: -1;
+  ime-mode: disabled;
 }
 
 /*
diff --git a/include/ui.js b/include/ui.js
index 93550780..9baf40c6 100644
--- a/include/ui.js
+++ b/include/ui.js
@@ -185,6 +185,7 @@ var UI;
 
             $D("keyboardinput").oninput = UI.keyInput;
             $D("keyboardinput").onblur = UI.keyInputBlur;
+            $D("keyboardinput").onsubmit = function () { return false; };
 
             $D("showExtraKeysButton").onclick = UI.showExtraKeys;
             $D("toggleCtrlButton").onclick = UI.toggleCtrl;
diff --git a/vnc.html b/vnc.html
index b8d11c70..4c4aeb1c 100644
--- a/vnc.html
+++ b/vnc.html
@@ -70,8 +70,7 @@
                      style for example -->
                 <textarea id="keyboardinput" autocapitalize="off"
                     autocorrect="off" autocomplete="off" spellcheck="false"
-                    mozactionhint="Enter" onsubmit="return false;"
-                    style="ime-mode: disabled;"></textarea>
+                    mozactionhint="Enter"></textarea>
                 <div id="noVNC_extra_keys">
                     <input type="image" alt="Extra keys" src="images/showextrakeys.png"
                         id="showExtraKeysButton" class="noVNC_status_button">