In the following, we will first present and discuss our results on the stability of Ru(0001) electrodes modified with one and three Pt layers during the COOR, including STM images recorded before and after the COOR. These results are then used to substantiate the findings in operando SXRD-MOR measurements on similar electrodes. We will demonstrate that the electro-oxidation of organic species can indeed improve the stability of the electrodes.