diff --git a/platform/mv3/extension/js/mode-manager.js b/platform/mv3/extension/js/mode-manager.js
index d6b89da77..3630925ca 100644
--- a/platform/mv3/extension/js/mode-manager.js
+++ b/platform/mv3/extension/js/mode-manager.js
@@ -296,7 +296,7 @@ export function getDefaultFilteringMode() {
     return getFilteringMode('all-urls');
 }
 
-export async function setDefaultFilteringMode(afterLevel) {
+export function setDefaultFilteringMode(afterLevel) {
     return setFilteringMode('all-urls', afterLevel);
 }