1 files changed, 1 insertions, 1 deletions
diff --git a/Userland/Libraries/LibWeb/RequestIdleCallback/IdleDeadline.h b/Userland/Libraries/LibWeb/RequestIdleCallback/IdleDeadline.h
index d703a9c620..d977fffb97 100644
--- a/Userland/Libraries/LibWeb/RequestIdleCallback/IdleDeadline.h
+++ b/Userland/Libraries/LibWeb/RequestIdleCallback/IdleDeadline.h
@@ -24,7 +24,7 @@ public:
 private:
     IdleDeadline(JS::Realm&, bool did_timeout);
 
-    virtual void initialize(JS::Realm&) override;
+    virtual JS::ThrowCompletionOr<void> initialize(JS::Realm&) override;
 
     bool m_did_timeout { false };
 };