diff --git a/os/emscripten/pre.js b/os/emscripten/pre.js
index 80987b2999..251f033ac7 100644
--- a/os/emscripten/pre.js
+++ b/os/emscripten/pre.js
@@ -59,13 +59,6 @@ Module.preRun.push(function() {
     window.openttd_syncfs = function() {
         /* Copy the virtual FS to the persistent storage. */
         FS.syncfs(false, function (err) { });
-
-        /* On first time, warn the user about the volatile behaviour of
-         * persistent storage. */
-        if (!window.openttd_syncfs_shown_warning) {
-            window.openttd_syncfs_shown_warning = true;
-            Module.onWarningFs();
-        }
     }
 
     window.openttd_exit = function() {
diff --git a/os/emscripten/shell.html b/os/emscripten/shell.html
index f393969306..933c1c5671 100644
--- a/os/emscripten/shell.html
+++ b/os/emscripten/shell.html
@@ -25,35 +25,10 @@
         z-index: 1;
       }
 
-      div.overlay {
-        height: 40px;
-        margin: 0 auto;
-        opacity: 0;
-        pointer-events: none;
-        position: absolute;
-        text-align: center;
-        transition: opacity 0.3s;
-        width: 100%;
-        z-index: 3;
-      }
-      div.overlay > div {
-        pointer-events: none;
-      }
-
       div.background > div, div.overlay > div {
         margin: auto;
       }
 
-      #filesystem {
-        background-color: #e00000;
-        border: 1px solid #fc6458;
-        color: #fcf880;
-        display: none;
-        outline: #a00000;
-        padding: 0 4px;
-        width: 600px;
-      }
-
       #title, #message {
         background-color: #838383;
         border: 1px solid #a8a8a8;
@@ -122,11 +97,6 @@
         </div>
       </div>
     </div>
-    <div class="overlay" id="overlay">
-      <div id="filesystem">
-        Warning: savegames are stored in the Indexed DB of your browser.<br/>Your browser can delete savegames without notice!
-      </div>
-    </div>
     <div class="textinput" id="textinput">
       <input type="textinput" id="textinputbox" value="" onfocusout="Module.finishTextInput();" tabindex=1></input>
       <br/>
@@ -216,17 +186,6 @@
           document.getElementById("message").innerHTML = "The game crashed!<br/><br/>Please reload your browser to restart the game.";
         },
 
-        onWarningFs: function() {
-          document.getElementById("filesystem").style.display = "inline-block";
-          document.getElementById("overlay").style.opacity = 1;
-          setTimeout(function() {
-            document.getElementById("overlay").style.opacity = 0;
-            setTimeout(function() {
-              document.getElementById("filesystem").style.display = "none";
-            }, 300);
-          }, 10000);
-        },
-
         textInputValue: null,
 
         startTextInput: function(text) {