diff --git a/platform/chromium/manifest.json b/platform/chromium/manifest.json
index 2a919fcd8..267dcf531 100644
--- a/platform/chromium/manifest.json
+++ b/platform/chromium/manifest.json
@@ -40,6 +40,7 @@
     ],
     "incognito": "split",
     "minimum_chrome_version": "26.0",
+    "optional_permissions": [ "file:///*" ],
     "options_page": "dashboard.html",
     "options_ui": {
         "page": "options_ui.html"
diff --git a/platform/opera/manifest.json b/platform/opera/manifest.json
index d41f45c07..b263768f1 100644
--- a/platform/opera/manifest.json
+++ b/platform/opera/manifest.json
@@ -40,6 +40,7 @@
     ],
     "incognito": "split",
     "minimum_chrome_version": "26.0",
+    "optional_permissions": [ "file:///*" ],
     "options_page": "dashboard.html",
     "permissions": [
         "contextMenus",