diff --git a/gulpfile.js b/gulpfile.js
index c380307..f5f1793 100755
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -163,6 +163,7 @@ function manifest() {
 
           if (targetEnv === 'firefox') {
             delete parsedJson.options_ui.chrome_style;
+            delete parsedJson.incognito;
           }
 
           parsedJson.version = require('./package.json').version;
diff --git a/src/manifest.json b/src/manifest.json
index cbee785..1faa047 100755
--- a/src/manifest.json
+++ b/src/manifest.json
@@ -71,5 +71,7 @@
     "page": "src/background/index.html"
   },
 
-  "web_accessible_resources": ["src/setup/index.html", "src/content/reset.js"]
+  "web_accessible_resources": ["src/setup/index.html", "src/content/reset.js"],
+
+  "incognito": "split"
 }