diff --git a/kolibri/plugins/epub_viewer/assets/src/views/EpubRendererIndex.vue b/kolibri/plugins/epub_viewer/assets/src/views/EpubRendererIndex.vue
index cc3142c280..1c76ab01d3 100644
--- a/kolibri/plugins/epub_viewer/assets/src/views/EpubRendererIndex.vue
+++ b/kolibri/plugins/epub_viewer/assets/src/views/EpubRendererIndex.vue
@@ -177,7 +177,7 @@
   import FocusLock from 'vue-focus-lock';
   import CoreFullscreen from 'kolibri.coreVue.components.CoreFullscreen';
   import responsiveElementMixin from 'kolibri.coreVue.mixins.responsiveElementMixin';
-  import responsiveWindowMixin from 'kolibri.coreVue.mixins.responsiveWindowMixin';
+  import useKResponsiveWindow from 'kolibri-design-system/lib/useKResponsiveWindow';
   import iFrameView from './SandboxIFrameView';
   import LoadingScreen from './LoadingScreen';
   import LoadingError from './LoadingError';
@@ -226,7 +226,13 @@
       SearchButton,
       LoadingError,
     },
-    mixins: [responsiveWindowMixin, responsiveElementMixin],
+    mixins: [responsiveElementMixin],
+    setup() {
+      const { windowIsSmall } = useKResponsiveWindow();
+      return {
+        windowIsSmall,
+      };
+    },
     data() {
       return {
         book: null,