diff --git a/src/js/background.js b/src/js/background.js
index f5aa657cf..cd530ac69 100644
--- a/src/js/background.js
+++ b/src/js/background.js
@@ -29,9 +29,10 @@
 // Not all platforms may have properly declared vAPI.webextFlavor.
 
 if ( vAPI.webextFlavor === undefined ) {
-    vAPI.webextFlavor = { major: 0, soup: new Set() };
+    vAPI.webextFlavor = { major: 0, soup: new Set([ 'ublock' ]) };
 }
 
+
 /******************************************************************************/
 
 var µBlock = (function() { // jshint ignore:line