diff --git a/AK/Vector.h b/AK/Vector.h
index 52db632ce1..52f73c4946 100644
--- a/AK/Vector.h
+++ b/AK/Vector.h
@@ -811,6 +811,8 @@ public:
             AK::swap(at(i), at(size() - i - 1));
     }
 
+    static FlatPtr outline_buffer_offset() { return OFFSET_OF(Vector, m_outline_buffer); }
+
 private:
     void reset_capacity()
     {