Philips joined forces with Centrum Wiskunde & Informatica and Eindhoven University of Technology to automatically maintain a key component, written in C++, of one of its successful software systems. Without automation, and for good reasons, such large-scale maintenance is often considered to be too complex and too risky. The partners applied the Rascal metaprogramming solution to script approximately 5,840 source code transformations. The resulting C++ code passed the quality assurance processes and is, in fact, of higher quality than before.