--- a/mobile/app/mobile.js
+++ b/mobile/app/mobile.js
@@ -549,9 +549,12 @@ pref("ui.dragThreshold", 24);
 
 #if MOZ_PLATFORM_MAEMO == 6
 pref("layers.acceleration.disabled", false);
 #else
 pref("layers.acceleration.disabled", true);
 #endif
 
 pref("notification.feature.enabled", true);
+
+// prevent tooltips from showing up
+pref("browser.chrome.toolbar_tips", false);
 pref("indexedDB.feature.enabled", false);

--- a/mobile/chrome/content/browser.xul
+++ b/mobile/chrome/content/browser.xul
@@ -683,11 +683,9 @@
         oncommand="BrowserUI.showPanel('addons-container');"/>
       <toolbarbutton class="appmenu-button"
         label="&downloadsHeader.label;"
         image="chrome://browser/skin/images/appmenu-downloads-hdpi.png"
         oncommand="BrowserUI.showPanel('downloads-container');"/>
     </hbox>
   </stack>
 
-  <tooltip default="true" id="default-tooltip"/>
-
 </window>

--- a/mobile/themes/core/platform.css
+++ b/mobile/themes/core/platform.css
@@ -67,20 +67,16 @@ label {
 
 /* Override any OS inverse themes */
 richlistbox,
 textbox {
   color: black;
   background-color: white;
 }
 
-#default-tooltip {
-  visibility: hidden; /* disabled in Fennec */
-}
-
 /* textboxes --------------------------------------------------------------- */
 textbox:not([type="number"]) {
   min-height: @textbox_height@;
   border: @border_width_small@ solid #cacdd5;
   -moz-border-radius: @border_radius_normal@;
   -moz-border-top-colors: -moz-initial;
   -moz-border-right-colors: -moz-initial;
   -moz-border-bottom-colors: -moz-initial;