diff --git a/Userland/Libraries/LibJS/Heap/MarkedVector.h b/Userland/Libraries/LibJS/Heap/MarkedVector.h
index 0b35376314..f0367b3cdb 100644
--- a/Userland/Libraries/LibJS/Heap/MarkedVector.h
+++ b/Userland/Libraries/LibJS/Heap/MarkedVector.h
@@ -63,8 +63,8 @@ public:
     auto begin() { return span().begin(); }
     auto begin() const { return span().begin(); }
 
-    auto end() { return span().begin(); }
-    auto end() const { return span().begin(); }
+    auto end() { return span().end(); }
+    auto end() const { return span().end(); }
 };
 
 }