diff --git a/src/mainPublicShareAuthSidebar.js b/src/mainPublicShareAuthSidebar.js
index 6c8d032f45b..f33ee28e083 100644
--- a/src/mainPublicShareAuthSidebar.js
+++ b/src/mainPublicShareAuthSidebar.js
@@ -63,6 +63,8 @@ Vue.use(VueShortKey, { prevent: ['input', 'textarea', 'div'] })
 Vue.use(vOutsideEvents)
 Vue.use(VueObserveVisibility)
 
+store.dispatch('setMainContainerSelector', '#talk-sidebar')
+
 /**
  * Wraps all the body contents in its own container.
  *
diff --git a/src/mainPublicShareSidebar.js b/src/mainPublicShareSidebar.js
index 86ae5b061d0..6db0c16e963 100644
--- a/src/mainPublicShareSidebar.js
+++ b/src/mainPublicShareSidebar.js
@@ -63,6 +63,8 @@ Vue.use(VueShortKey, { prevent: ['input', 'textarea', 'div'] })
 Vue.use(vOutsideEvents)
 Vue.use(VueObserveVisibility)
 
+store.dispatch('setMainContainerSelector', '#talk-sidebar')
+
 /**
  *
  */