--- a/mobile/android/chrome/content/browser.js
+++ b/mobile/android/chrome/content/browser.js
@@ -4424,17 +4424,17 @@ Tab.prototype = {
 
     // If we are navigating to a new location with a different host,
     // clear any URL origin that might have been pinned to this tab.
     let ss = Cc["@mozilla.org/browser/sessionstore;1"].getService(Ci.nsISessionStore);
     let appOrigin = ss.getTabValue(this, "appOrigin");
     if (appOrigin) {
       let originHost = "";
       try {
-        let originHost = Services.io.newURI(appOrigin, null, null).host;
+        originHost = Services.io.newURI(appOrigin, null, null).host;
       } catch (e if (e.result == Cr.NS_ERROR_FAILURE)) {
         // NS_ERROR_FAILURE can be thrown by nsIURI.host if the URI scheme does not possess a host - in this case
         // we just act as if we have an empty host.
       }
       if (originHost != aLocationURI.host) {
         // Note: going 'back' will not make this tab pinned again
         ss.deleteTabValue(this, "appOrigin");
       }