--- a/mobile/chrome/content/aboutHome.xhtml
+++ b/mobile/chrome/content/aboutHome.xhtml
@@ -405,17 +405,17 @@
       getChromeWin().Services.obs.removeObserver(updateAddons, "recommended-addons-cache-updated");
     }
    
    function startDiscovery() {
      let win = getChromeWin();
 
      // If a sidebar is completely open, just bail
      let [leftWidth, rightWidth] = win.Browser.computeSidebarVisibility();
-     if (leftWidth == 1 || rightWidth == 1) {
+     if (leftWidth == 1 || rightWidth == 1 || win.Util.isTablet()) {
        endDiscovery();
        return;
      }
 
      let doc = win.document;
      let broadcaster = doc.getElementById("bcast_uidiscovery");
 
      doc.addEventListener("animationend", endDiscovery, false);