diff --git a/src/components/settings_modal/tabs/mutes_and_blocks_tab.js b/src/components/settings_modal/tabs/mutes_and_blocks_tab.js
index 824ec6a2e..719d3a7e3 100644
--- a/src/components/settings_modal/tabs/mutes_and_blocks_tab.js
+++ b/src/components/settings_modal/tabs/mutes_and_blocks_tab.js
@@ -124,7 +124,7 @@ const MutesAndBlocks = {
       return useUsersStore().unmuteUsers(ids)
     },
     filterUnMutedDomains(urls) {
-      return urls.filter((url) => !this.user.domainMutes.includes(url))
+      return urls.filter((url) => !this.user.domainMutes.has(url))
     },
     queryKnownDomains(query) {
       return new Promise((resolve) => {