--- a/mobile/android/modules/HelperApps.jsm
+++ b/mobile/android/modules/HelperApps.jsm
@@ -98,16 +98,24 @@ var HelperApps =  {
         });
       } catch(e) {}
     }
 
     return results;
   },
 
   getAppsForUri: function getAppsForUri(uri, flags = { }, callback) {
+    // Return early for well-known internal schemes
+    if (!uri || uri.schemeIs("about") || uri.schemeIs("chrome")) {
+      if (callback) {
+        callback([]);
+      }
+      return [];
+    }
+
     flags.filterBrowsers = "filterBrowsers" in flags ? flags.filterBrowsers : true;
     flags.filterHtml = "filterHtml" in flags ? flags.filterHtml : true;
 
     // Query for apps that can/can't handle the mimetype
     let msg = this._getMessage("Intent:GetHandlers", uri, flags);
     let parseData = (d) => {
       let apps = []
       if (!d) {