diff --git a/app/components/site-head.js b/app/components/site-head.js
index 1fa40c53c84..2b1a3fc8718 100644
--- a/app/components/site-head.js
+++ b/app/components/site-head.js
@@ -2,12 +2,10 @@ import Component from '@ember/component';
 import { equal, readOnly } from '@ember/object/computed';
 import { run } from '@ember/runloop';
 import { inject as service } from '@ember/service';
-import { communicationService } from '../modules/ads/communication/communication-service';
 import HeadroomMixin from '../mixins/headroom';
 import { standalone } from '../utils/browser';
 import { track, trackActions } from '../utils/track';
 import Ads from '../modules/ads';
-import { isType } from '../modules/ads/communication/is-type';
 
 export default Component.extend(
   HeadroomMixin,
@@ -57,19 +55,10 @@ export default Component.extend(
     },
 
     setExperimentFlags() {
+      // Hacky way to distinct UCP and App wikis as enableHydraFeatures is available only on UCP
       const isUcpWiki = this.get('wikiVariables.enableHydraFeatures') !== undefined;
-      const currentUser = this.currentUser;
-      const isAuthenticated = currentUser.get('isAuthenticated');
-      if (!isAuthenticated && isUcpWiki) {
-        communicationService.addListener((action) => {
-          if (isType(action, '[AdEngine] set InstantConfig')) {
-            const defaultScope = action.payload.get('icServicesMobileSearchScopeDropdown');
-            if (defaultScope) {
-              this.set('showSearchScope', true);
-              this.set('defaultSearchScope', defaultScope);
-            }
-          }
-        });
+      if (isUcpWiki) {
+        this.set('showSearchScope', true);
       }
     },
 
diff --git a/app/templates/components/site-head.hbs b/app/templates/components/site-head.hbs
index 19c7c10ac97..ced3d63c731 100644
--- a/app/templates/components/site-head.hbs
+++ b/app/templates/components/site-head.hbs
@@ -13,7 +13,6 @@
     @model={{this.globalNavigation}}
     @sitename={{this.communityHeader.sitename}}
     @showSearchScope={{this.showSearchScope}}
-    @defaultSearchScope={{this.defaultSearchScope}}
     @canShowContentRecommendations={{this.canShowContentRecommendations}}
     @track={{action this.track}}
     @onModalOpen={{action this.onModalOpen}}
diff --git a/package.json b/package.json
index d118ba53e88..9cd3b658e84 100644
--- a/package.json
+++ b/package.json
@@ -45,7 +45,7 @@
     "compression": "1.7.4",
     "cors": "2.8.5",
     "deep-extend": "0.6.0",
-    "design-system": "git://github.com/Wikia/design-system.git#23.17.0",
+    "design-system": "git://github.com/Wikia/design-system.git#SER-4524",
     "ember-cli-dependency-lint": "1.1.3",
     "ember-hammer": "github:wikia/ember-hammer#6fdd246fd6fe70594be59186e3b3f6068ed91fd6",
     "ember-maybe-import-regenerator-for-testing": "1.0.0",