diff --git a/app/javascript/mastodon/actions/domain_blocks.js b/app/javascript/mastodon/actions/domain_blocks.js
index 47e2df76b..0445a5e10 100644
--- a/app/javascript/mastodon/actions/domain_blocks.js
+++ b/app/javascript/mastodon/actions/domain_blocks.js
@@ -128,7 +128,7 @@ export function expandDomainBlocks() {
   return (dispatch, getState) => {
     const url = getState().getIn(['domain_lists', 'blocks', 'next']);
 
-    if (url === null) {
+    if (!url) {
       return;
     }